WO2017143903A1 - 接入控制方法、装置及系统 - Google Patents

接入控制方法、装置及系统 Download PDF

Info

Publication number
WO2017143903A1
WO2017143903A1 PCT/CN2017/072904 CN2017072904W WO2017143903A1 WO 2017143903 A1 WO2017143903 A1 WO 2017143903A1 CN 2017072904 W CN2017072904 W CN 2017072904W WO 2017143903 A1 WO2017143903 A1 WO 2017143903A1
Authority
WO
WIPO (PCT)
Prior art keywords
authentication
user
address
vxlan
access device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2017/072904
Other languages
English (en)
French (fr)
Inventor
谢莹
王昕�
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to EP17755732.9A priority Critical patent/EP3410648B1/en
Publication of WO2017143903A1 publication Critical patent/WO2017143903A1/zh
Priority to US16/109,801 priority patent/US11095478B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/46—Interconnection of networks
    • H04L12/4641—Virtual LANs, VLANs, e.g. virtual private networks [VPN]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/74—Address processing for routing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
    • H04L63/0876—Network architectures or network communication protocols for network security for authentication of entities based on the identity of the terminal or configuration, e.g. MAC address, hardware or software configuration or device fingerprint
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
    • H04L63/0884—Network architectures or network communication protocols for network security for authentication of entities by delegation of authentication, e.g. a proxy authenticates an entity to be authenticated on behalf of this entity vis-à-vis an authentication entity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/10—Network architectures or network communication protocols for network security for controlling access to devices or network resources
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/10—Network architectures or network communication protocols for network security for controlling access to devices or network resources
    • H04L63/102—Entity profiles

Definitions

  • the present invention relates to the field of communications, and in particular, to an access control method, apparatus, and system.
  • VXLAN virtual extensible local area network
  • UDP User Datagram Protocol
  • VM virtual machine
  • MAC address media access control
  • the VXLAN includes the access device 01 and the service router (English: Service Router; SR: 02), and the access device 01 and the SR 02 are VXLAN edge devices, which are called network virtual edges.
  • Network virtualization edge (referred to as NVE).
  • Each NVE is configured with a VXLAN tunneling terminal (English: VXLAN Tunneling End Point; VTEP for short).
  • the SR-02 needs to authenticate, charge, and authorize the user based on the physical location information of the user, and needs to send IP service packets to the user after the user goes online. Do a security binding check.
  • the access device 01 inserts the DHCP 82 option carrying the physical location information of the user or the PPP protocol on the Ethernet in the Dynamic Host Configuration Protocol (DHCP) message.
  • DHCP Dynamic Host Configuration Protocol
  • Point-to-Point Protocol Over Ethernet is used to insert the PPPoE+ option of the user's access information (such as physical location, loop identifier, etc.) and send the DHCP packet or PPPoE packet to the SR- 02, then SR-02 will use the user's physical location information carried in the DHCP message or the PPPoE message, as well as the user name and/or password, the virtual local area network (English: virtual local area network; abbreviation: VLAN) identifier, and the SR for receiving DHCP.
  • One or more of the ports of the packet or the PPPoE packet are sent to the authentication server 1 to authenticate the user. After the authentication succeeds, the user can access the network.
  • the access device configured with the VTEP sends a VXLAN packet to the SR configured with the VTEP in an equal-cost multi-path routing (ECMP) manner. It is not possible to determine which port the SR actually receives VXLAN packets. Therefore, the information used for authentication cannot be configured in the authentication server in advance, and the user cannot be authenticated according to the user's access information in the VXLAN scenario.
  • ECMP equal-cost multi-path routing
  • the present invention provides an access control method, device, and system.
  • the technical solution is as follows:
  • an access control method for a service router in a virtual scalable local area network (VXLAN), the VXLAN further comprising an access device, the method comprising:
  • VXLAN request message sent by the access device, where the VXLAN request message is encapsulated by an Internet Protocol IP request message sent by a user, where the VXLAN request message includes an IP address of the access device and The authentication information of the user;
  • VXLAN request packet Parsing the VXLAN request packet to obtain an IP address of the access device and authentication information of the user;
  • the user is controlled according to the authentication result.
  • the access device encapsulates the IP request packet sent by the user to obtain a VXLAN request packet, and sends the VXLAN request packet to the service router, and the service router parses the VXLAN request packet to obtain the IP address of the access device. And the user's authentication information, and then the IP address of the access device and the user's authentication information are sent to the authentication server to authenticate the user. Since the access device corresponding to each user is unique in the VXLAN, the IP address of the access device corresponding to the user for authentication and the authentication information of the user can be configured in the authentication server in advance, thereby implementing the VXLAN scenario. The user is authenticated according to the user's access information.
  • the access device needs to insert the DHCP option 82 or the PPPoE option+ into the IP request packet to determine the physical location information of the user, so the process of user authentication is complicated.
  • the access device directly encapsulates the IP request packet sent by the user, and the VXLAN request packet includes the IP address of the access device, and the IP address of the access device can indirectly reflect the user's Physical location information, so the process of user authentication in the present invention is relatively simple.
  • the user name and password can be falsified by the user, so the reliability of the user authentication is low.
  • the IP address of the access device is authenticated, because the outer source IP address in the VXLAN request packet is connected. The user added to the device cannot be tampered with by the user. Therefore, the reliability of user authentication is high.
  • controlling the user according to the authentication result includes:
  • the method further includes:
  • the local authentication binding entry is generated according to the authentication result, where the local authentication binding entry includes an IP address of the access device and authentication information of the user.
  • the method further includes:
  • VXLAN service packet Receiving a VXLAN service packet, where the VXLAN service packet is encapsulated by an IP service packet sent by the user;
  • the processing, by the local authentication binding entry, the IP service packet including:
  • the IP service packet is prohibited from being forwarded.
  • the local authentication binding entry including the IP address of the access device and the authentication information of the user is generated according to the authentication result, so that the service router parses the VXLAN after receiving the VXLAN service packet.
  • the service packet receives the IP address of the outer layer and the IP address of the access device that encapsulates the IP service packet in the IP service packet and the VXLAN service packet, and processes the IP service packet according to the local authentication binding entry. . It is determined whether the IP address of the access device is the same as the IP address of the access device recorded in the local authentication binding entry. If the IP address of the access device is the same as the IP address of the access device, the IP address of the IP address is the same as that of the local device.
  • the IP service packets are insecure and the IP service packets are forbidden. This ensures the security of the network.
  • the outer source IP address of the VXLAN service packet is added to the access device and cannot be tampered with by the user. Therefore, the reliability of the security binding check is high.
  • the IP address of the access device and the authentication information of the user are sent to the authentication server, including:
  • the authentication server is a remote authentication dial-up user server RADIUS.
  • the attribute field 87 of the authentication packet includes an IP address of the access device.
  • an access control apparatus for a virtual scalable local area network (VXLAN), the VXLAN further includes an access device, and the access control apparatus includes:
  • a first receiving module configured to receive a VXLAN request message sent by the access device, where the VXLAN request message is encapsulated by an Internet Protocol IP request message sent by a user, where the VXLAN request message includes the The IP address of the access device and the authentication information of the user;
  • a first parsing module configured to parse the VXLAN request packet, and obtain an IP address of the access device and authentication information of the user;
  • a sending module configured to send an IP address of the access device and authentication information of the user to an authentication server, so that the authentication server authenticates the user;
  • a second receiving module configured to receive an authentication result sent by the authentication server
  • control module configured to control the user according to the authentication result.
  • control module is further configured to:
  • the access control device further includes:
  • a generating module configured to generate, according to the authentication result, a local authentication binding entry, where the authentication result indicates that the IP address of the access device and the user are Certification Information.
  • the access control device further includes:
  • a third receiving module configured to receive a VXLAN service packet, where the VXLAN service packet is encapsulated by an IP service packet sent by a user;
  • a second parsing module configured to parse the VXLAN service packet, and obtain an outer source IP address in the VXLAN header of the IP service packet and the VXLAN service packet;
  • the processing module is configured to process the IP service packet according to the local authentication binding entry.
  • processing module is further configured to:
  • the IP service packet is prohibited from being forwarded.
  • the sending module is further configured to:
  • the authentication server is a remote authentication dial-up user server RADIUS.
  • the attribute field 87 of the authentication packet includes an IP address of the access device.
  • an access control system includes: a virtual scalable local area network (VXLAN) and an authentication server, where the VXLAN includes: an access device and a service router.
  • VXLAN virtual scalable local area network
  • the service router includes: the access control device of the second aspect.
  • an access control apparatus for a virtual scalable local area network (VXLAN), the VXLAN further comprising an access device, the access control apparatus comprising: at least one processor, at least one network interface, a memory, and At least one communication bus, the processor is configured to execute a program stored in the memory, the program comprising:
  • VXLAN request message sent by the access device, where the VXLAN request message is encapsulated by an Internet Protocol IP request message sent by a user, where the VXLAN request message includes an IP address of the access device and The authentication information of the user;
  • VXLAN request packet Parsing the VXLAN request packet to obtain an IP address of the access device and authentication information of the user;
  • the user is controlled according to the authentication result.
  • controlling the user according to the authentication result includes:
  • the program further includes:
  • the local authentication binding entry is generated according to the authentication result, where the local authentication binding entry includes an IP address of the access device and authentication information of the user.
  • the program further includes:
  • VXLAN service packet Receiving a VXLAN service packet, where the VXLAN service packet is encapsulated by an IP service packet sent by the user;
  • the processing, by the local authentication binding entry, the IP service packet including:
  • the IP service packet is prohibited from being forwarded.
  • the IP address of the access device and the authentication information of the user are sent to the authentication server, including:
  • the authentication server is a remote authentication dial-up user server RADIUS.
  • the attribute field 87 of the authentication packet includes an IP address of the access device.
  • a fifth aspect provides an access control system, where the access control system includes: a virtual scalable local area network (VXLAN) and an authentication server, where the VXLAN includes: an access device and a service router.
  • VXLAN virtual scalable local area network
  • the service router includes: the access control device according to the fourth aspect.
  • an access device encapsulates an IP request packet sent by a user to obtain a VXLAN request message, and requests the VXLAN.
  • the packet is sent to the service router, and the VXLAN request packet is parsed by the service router to obtain the IP address of the access device and the authentication information of the user, and then the IP address of the access device and the authentication information of the user are sent to the authentication server.
  • the user authenticates. Since the access device corresponding to each user is unique in the VXLAN, the IP address of the access device corresponding to the user for authentication and the authentication information of the user can be configured in the authentication server in advance, thereby implementing the VXLAN scenario. The user is authenticated according to the user's access information.
  • the local authentication binding entry including the IP address of the access device and the authentication information of the user is generated according to the authentication result, so that the service router parses the VXLAN after receiving the VXLAN service packet.
  • the service packet receives the IP address of the outer layer and the IP address of the access device that encapsulates the IP service packet in the IP service packet and the VXLAN service packet, and processes the IP service packet according to the local authentication binding entry. . It is determined whether the IP address of the access device is the same as the IP address of the access device recorded in the local authentication binding entry. If the IP address of the access device is the same as the IP address of the access device, the IP address of the IP address is the same as that of the local device.
  • IP service packets are insecure and the IP service packets are forbidden. This ensures the security of the network.
  • the external source IP address of the VXLAN request packet and the VXLAN service packet are added to the access device and cannot be tampered with by the user. Therefore, the reliability of user authentication and security binding check is high.
  • FIG. 1 is a schematic structural diagram of a VXLAN provided by the prior art
  • FIG. 2 is a schematic diagram of an application scenario of an access control method according to an embodiment of the present disclosure
  • FIG. 3 is a flowchart of a method for an access control method according to an embodiment of the present invention.
  • 4-1 is a flowchart of a method for another access control method according to an embodiment of the present invention.
  • FIG. 4-2 is a schematic structural diagram of a VXLAN request packet according to an embodiment of the present invention.
  • 4-3 is a flowchart of a method for sending an IP service packet according to an embodiment of the present invention.
  • 5-1 is a schematic structural diagram of an access control apparatus according to an embodiment of the present invention.
  • FIG. 5-2 is a schematic structural diagram of another access control apparatus according to an embodiment of the present disclosure.
  • 5-3 is a schematic structural diagram of still another access control apparatus according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of an access control system according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram of still another access control apparatus according to an embodiment of the present invention.
  • FIG. 2 is a schematic diagram of an application scenario of an access control method according to an embodiment of the present invention.
  • the VXLAN 2 includes an access device 21 and a service router 22.
  • the access device 21 may be an access switch or an access router, and the service router may be a broadband network gateway (BNG) or a broadband remote access server (English: broadband remote access server; :BRAS), or other gateway with authentication capabilities.
  • BNG broadband network gateway
  • BRAS broadband remote access server
  • the user can log in to the user equipment 3, the user equipment 3 accesses the access device 21, the access device 21 accesses the service router 22, and the service router 22 can simultaneously access the authentication server 1 and the network (not shown in FIG. 2).
  • the network may be a target network where other user equipments communicating with the user equipment 3 are located, or a core network accessing the target network.
  • the authentication server 1 can be a remote authentication dial-up user server (English: Remote Access Dial-In User Service; RADIUS for short).
  • an embodiment of the present invention provides an access control method, which may be used in the service router 22 in FIG. 2, and the access control method may include:
  • Step 301 Receive a VXLAN request packet sent by the access device, where the VXLAN request packet is encapsulated by the IP request packet sent by the user, and the VXLAN request packet includes an IP address of the access device and authentication information of the user.
  • Step 302 Parse the VXLAN request packet to obtain an IP address of the access device and authentication information of the user.
  • Step 303 Send the IP address of the access device and the authentication information of the user to the authentication server, so that the authentication server authenticates the user.
  • Step 304 Receive an authentication result sent by the authentication server.
  • Step 305 Control the user according to the authentication result.
  • the step 305 may include: allowing the user to access the network when the authentication result indicates that the authentication is successful; and prohibiting the user from accessing the network when the authentication result indicates that the authentication fails.
  • Each authentication rule includes an IP address of the access device and at least one type of user information.
  • the user information is information that can uniquely identify a user, for example, a username and a password. Wait.
  • each authentication rule may also include other information such as the user's VXLAN identity.
  • the access device encapsulates the IP request packet sent by the user to obtain a VXLAN request packet, and sends the VXLAN request packet to the service router, and
  • the service router parses the VXLAN request packet to obtain the IP address of the access device and the authentication information of the user, and then sends the IP address of the access device and the authentication information of the user to the authentication server to authenticate the user. Since the access device corresponding to each user is unique in the VXLAN, the IP address of the access device corresponding to the user for authentication and the authentication information of the user can be configured in the authentication server in advance, thereby implementing the VXLAN scenario. The user is authenticated according to the user's access information.
  • the access control method may further include:
  • the local authentication binding entry is generated according to the authentication result, where the local authentication binding entry includes an IP address of the access device and authentication information of the user.
  • the access control method may further include:
  • VXLAN service packet Receiving a VXLAN service packet, where the VXLAN service packet is encapsulated by an IP service packet sent by the user;
  • the processing, by the local authentication binding entry, the IP service packet including:
  • the IP service packet is prohibited from being forwarded.
  • step 303 can include:
  • the authentication server is a remote authentication dial-up user server RADIUS
  • the attribute field of the authentication packet 87 includes an IP address of the access device.
  • the access device encapsulates the IP request packet sent by the user to obtain a VXLAN request packet, and sends the VXLAN request packet to the service router, and
  • the service router parses the VXLAN request packet to obtain the IP address of the access device and the authentication information of the user, and then sends the IP address of the access device and the authentication information of the user to the authentication server to authenticate the user. Since the access device corresponding to each user is unique in the VXLAN, the IP address of the access device corresponding to the user for authentication and the authentication information of the user can be configured in the authentication server in advance, thereby implementing the VXLAN scenario. The user is authenticated according to the user's access information.
  • the local authentication binding entry including the IP address of the access device and the authentication information of the user is generated according to the authentication result, so that the service router parses the VXLAN after receiving the VXLAN service packet.
  • the service packet receives the IP address of the outer layer and the IP address of the access device that encapsulates the IP service packet in the IP service packet and the VXLAN service packet, and processes the IP service packet according to the local authentication binding entry. . It is determined whether the IP address of the access device is the same as the IP address of the access device recorded in the local authentication binding entry. Access recorded in the outer source IP address and local authentication binding entry If the IP address of the device is the same, the IP service packet is determined to be secure, and the IP service packet is forwarded.
  • the IP service packet is determined. It is not secure. It is forbidden to forward IP service packets to ensure network security.
  • the external source IP address of the VXLAN request packet and the VXLAN service packet are added to the access device and cannot be tampered with by the user. Therefore, the reliability of user authentication and security binding check is high.
  • the embodiment of the present invention provides another access control method, which is described by taking the user as a legal user as an example.
  • the access control method may include:
  • Step 401 The user equipment sends an IP request packet to the access device.
  • the user equipment accesses the access device, and the access device accesses the service router.
  • the service router can access the authentication server and the network at the same time.
  • the network may be the target network where other user equipments communicating with the user equipment are located, or Access to the core network of the target network, which may be the Internet (English: Internet).
  • the user can input a user name and a password on the user equipment, so that the user equipment generates an IP request packet including the user's authentication information (for example, a user name and a password), and sends the generated IP request packet to the access accessed by the user equipment. device.
  • the user name and the password may be pre-assigned to the user.
  • the specific structure of the IP request packet generated by the user equipment may refer to the specific structure of the IP request packet generated by the user equipment in the VLAN, which is not described herein. .
  • Step 402 The access device encapsulates the IP request packet to obtain a VXLAN request packet.
  • the access device may encapsulate the IP request packet by encapsulating the MAC address in UDP, thereby obtaining a VXLAN request packet, and the VXLAN request packet is obtained.
  • the text may include an IP address of the access device, authentication information of the user (eg, a username and password), and an identifier of the VXLAN where the access device is located.
  • FIG. 4-2 is a schematic structural diagram of a VXLAN request packet according to an embodiment of the present invention.
  • the VXLAN request packet may include: an outer Ethernet header package. Part, outer IP header (English: outer IP header) encapsulation part, outer UDP header (English: outer UDP header) encapsulation part, VXLAN header (English: VXLAN header) encapsulation part, and IP request message.
  • the Outer Ethernet header encapsulation part may include: a destination MAC address (English: MAC DA) field, a source MAC address (English: MAC SA) field, a VLAN type (English: VLAN type) field, and a VLAN identifier (English: VLAN identifier; : VLAN ID) field and Ethernet type (English: Ethernet type) field.
  • the MAC DA field indicates: the next hop MAC address directly connected to the routing table of the VTEP to which the destination virtual machine belongs; the MAC SA field indicates the MAC address of the VTEP to which the virtual machine that sends the VXLAN request packet belongs; When a VLAN tag is carried, the value of the VLAN Type field is 0x8100. When the protocol packet corresponding to the Ethernet Type field is an IP packet, the value of the Ethernet Type field is 0x0800.
  • the Outer IP header encapsulation part may include: a pre-idle field, a protocol (English: protocol) field, a post-idle field, a source IP address (English: IP SA) field, and a destination IP address (English: IP DA) field.
  • the IP SA field indicates the IP address of the access device; the IP DA field indicates the IP address of the service router.
  • the Outer UDP header encapsulation part may include: a source port (English: source port) field, a destination port (English: destport) field, a UDP length (English: UDP length) field, and a UDP checksum (English: UDP checksum) field.
  • the port number indicated by the destport field can be 4789, source
  • the source port number indicated by the port field can be calculated by using a hash algorithm for the IP request message.
  • the VXLAN header encapsulation part includes: a VXLAN flag (English: VXLAN flags) field, a pre-reserved (English: reserved) field, a VXLAN identifier (VXLAN identifier; abbreviated as: VNI) field, and a post-reserved field, where the VNI field can be Includes the ID of the VXLAN where the access device is located.
  • the IP request packet includes, in order, an inner Ethernet header field, an inner IP header field, and a payload (English: payload) field.
  • the Payload field includes the username and password entered by the user.
  • Step 403 The access device sends a VXLAN request message to the service router.
  • the access device may send the VXLAN request packet including the IP address of the access device, the identifier of the VXLAN, and the authentication information of the user. To the service router.
  • Step 404 The service router parses the VXLAN request packet, and obtains an IP address of the access device, an identifier of the VXLAN, and authentication information of the user.
  • the service router can parse the VXLAN request packet to obtain the IP address, user name, password, and VXLAN identifier of the access device included in the VXLAN request packet. For example, the IP address of the access device is obtained from the Outer IP header encapsulation part of the VXLAN request packet, and the VXLAN identifier of the access device is obtained from the VXLAN header encapsulation part of the VXLAN request packet, and the VXLAN request message is received from the VXLAN request packet.
  • the IP request message gets the username and password.
  • Step 405 The service router generates an authentication packet including an IP address of the access device, an identifier of the VXLAN, and authentication information of the user.
  • the service router can generate an IP address, a username, a password, and a VXLAN including the access device according to the RADIUS protocol, the IP address of the access device, the username, the password, and the VXLAN identifier.
  • the attribute field of the authentication message 87 may include an IP address of the access device, and the attribute field 87 may be a network attached storage port identifier (English: network attached storage port identifier; referred to as NAS-Port-Id) ) field.
  • Step 406 The service router sends an authentication packet to the authentication server.
  • the service router can access the authentication server, so the service router can send the authentication packet to the authentication server, and the authentication server can be a RADIUS server.
  • the authentication server can also be an authentication server other than RADIUS. There is no limit to this.
  • Step 407 The authentication server authenticates the authentication packet.
  • the authentication server may be pre-configured with an authentication rule, where each authentication rule includes an IP address of the access device and at least one type of user information, and the user information is information that can uniquely identify a user, such as a username, a password, and the like.
  • each authentication rule may also include other information such as the user's VXLAN identity. For example, an authentication entry for recording an authentication rule may be set on the authentication server.
  • the authentication entry can be as shown in Table 1.
  • Two authentication rules are recorded in the authentication entry.
  • the first authentication rule includes: ZHANGSAN (user name), 110 (password), A1 (IP address of the access device), and VXLAN-B1 (the VXLAN identifier of the access device).
  • the second authentication rule includes: LISI (user name), 120 (password), A2 (IP address of the access device), and VXLAN-B2 (identity of the VXLAN where the access device is located).
  • the authentication server can obtain the IP address, user name, password, and VXLAN identifier of the access device in the authentication packet, and find the authentication entry in the authentication entry on the authentication server. Whether there is an authentication rule includes the IP address, user name, password, and VXLAN identifier of the access device in the authentication packet. If the authentication rule includes an IP address, a user name, a password, and an identifier of the VXLAN of the access device in the authentication packet, the authentication server may determine that the authentication succeeds, and generate an indication for indicating the authentication result. The first message that is successful for authentication.
  • the authentication server may determine that the authentication fails, and generate an indication for indicating the authentication.
  • the result is the second message that the authentication failed.
  • the embodiment of the present invention takes the user as a legal user as an example. Therefore, an authentication rule exists in the authentication entry of the authentication server, including the IP address, user name, password, and VXLAN identifier of the access device in the authentication packet.
  • the server may generate a first message indicating that the authentication result is successful authentication.
  • Step 408 The authentication server sends an authentication result to the service router.
  • the authentication server can send the authentication result to the service router.
  • the authentication server may send the first packet used to indicate that the authentication result is successful to the service router.
  • Step 409 The service router controls the user equipment to access the target network.
  • the authentication result sent by the authentication server to the service router in step 408 indicates that the authentication is successful, the service router allows the user to access the network, and can control the user equipment to access the network, and notify User authentication is successful and the network is connected.
  • the service router may generate a local authentication binding entry according to the authentication result, where the local authentication binding entry may include the IP of the successfully authenticated access device.
  • Address and user authentication information For example, the local authentication binding entry may be as shown in Table 2.
  • Table 2 the correspondence between the authentication information C1 of the first user and the IP address A1 of the access device, and the authentication information C2 of the second user are recorded. Correspondence of the IP address A2 of the access device.
  • the authentication information C1 or C2 of the user in Table 2 may include information such as a username, a password, and an IP address of the user.
  • Step 410 The user equipment sends an IP service packet to the network through the access device and the service router.
  • the user equipment can generate an IP service packet and send the IP service packet to the target network through the access device and the service router.
  • step 410 can include:
  • Step 4101 The user equipment sends an IP service packet to the access device.
  • the user equipment can generate an IP service packet and send the generated IP service packet to the access device accessed by the user equipment.
  • the IP service packet can include at least one type of the user.
  • Authentication information the at least one type of authentication information may include an IP address of the user.
  • the specific structure of the IP service packet generated by the user equipment may refer to the specific structure of the IP service packet generated by the user equipment in the prior art, which is not described herein.
  • Step 4102 The access device encapsulates the IP service packet to obtain a VXLAN service packet.
  • the access device may encapsulate the IP service packet by using an encapsulation manner in which the MAC address is encapsulated in the UDP to obtain a VXLAN service packet.
  • the specific manner of the IP address packet encapsulating the device in the step 4102 reference may be made to the specific manner in which the access device encapsulates the IP request packet in the step 402, which is not described herein.
  • Step 4103 The access device sends a VXLAN service packet to the service router.
  • the access device After the access device encapsulates the IP service packet sent by the user equipment and obtains the VXLAN service packet, the access device can send the VXLAN service packet to the service router.
  • Step 4104 The service router parses the VXLAN service packet to obtain an outer source IP address and an IP service packet.
  • the service router can parse the VXLAN service packet and obtain the information in the VXLAN service packet. For example, the outer source IP address is obtained from the Outer IP header encapsulation part of the VXLAN service packet.
  • the IP service packet in the VXLAN service packet gets the IP address of the user.
  • Step 4105 The service router determines whether the outer source IP address is the same as the IP address of the access device recorded in the local authentication binding entry.
  • the IP request message sent by the user equipment to the access device in the step 401 may include the IP address of the user.
  • the service router may also obtain the IP address of the user by parsing the VXLAN request message.
  • the authentication information in the local authentication binding entry established by the service router may include the IP address of the user.
  • the IP request message sent by the user equipment to the access device may not include the IP address of the user.
  • the service router cannot obtain the IP address of the user by parsing the VXLAN request message.
  • the authentication server may assign an IP address to the user.
  • the authentication result sent by the authentication server to the service router may include an IP address assigned to the user.
  • the service router can send the IP address assigned to the user to the user equipment, so that the IP service packet sent by the user equipment to the access device in step 4101 includes the IP address of the user, and further The service router can also store the IP address assigned to the user in the authentication information in the local authentication binding entry.
  • the service router can search for the access corresponding to the IP address of the user in the local authentication binding entry according to the authentication information of the user (such as the IP address of the user) in the IP service packet that is parsed in step 4104.
  • the IP address of the device is determined, and the outer source IP address obtained in step 4104 is the same as the IP address of the access device in the local authentication binding entry, and the outer source IP address and the local authentication binding table are If the IP address of the access device in the entry is the same, the IP service packet in the VXLAN service packet is determined to be secure. If the source IP address of the access device is different from the IP address of the access device in the local authentication binding entry, Then, it is determined that the IP service packet in the VXLAN service packet is insecure.
  • Step 4106 When the IP address of the access device recorded in the outer source IP address and the local authentication binding entry is the same, the service router forwards the IP service packet to the network.
  • the service router can determine the security of the parsed IP service packet and forward the parsed IP service packet to the network. For example, the IP service packet may be forwarded to the target network, or the IP service packet may be forwarded to the core network of the access target network, and then the core network forwards the IP service packet to the target network.
  • the authentication result sent by the authentication server to the service router in step 408 indicates that the authentication fails, and the service router can prohibit the user from accessing the network and notify the user that the authentication fails.
  • the illegal user can still control the user equipment to generate an IP service packet, and send the generated IP service packet to the user.
  • the access device encapsulates the IP service packet generated by the user equipment, and obtains the VXLAN service packet, and sends the VXLAN service packet to the service router.
  • the user equipment does not generate the IP request packet in step 401.
  • the IP service packet is directly generated, and the generated IP service packet is sent to the access device.
  • the access device encapsulates the IP service packet to obtain the VXLAN service packet, and sends the VXLAN service packet to the service router.
  • the service router After receiving the VXLAN service packet, the service router can parse the VXLAN service packet and determine whether the source IP address of the outer device is the same as the IP address of the access device recorded in the local authentication binding entry. The IP address of the access device recorded in the local authentication binding entry is different, and the service router can determine that the IP service packet in the VXLAN service packet is insecure, and the user is an unauthorized user. It is forbidden to forward IP service packets to ensure network security.
  • the user authentication process is complicated because the access device needs to insert the DHCP option 82 or the PPPoE option+ into the IP request packet to determine the physical location information of the user.
  • the access device directly encapsulates the IP request packet sent by the user, and the VXLAN request packet includes the IP address of the access device, and the IP address of the access device can indirectly reflect the user's Physical location information, so the process of user authentication in the present invention is relatively simple.
  • the user name and password input by the user are authenticated. Since the user name and password can be tampered with by the user, the reliability of the user authentication is low.
  • the IP address of the access device is authenticated due to the VXLAN request. The source IP address of the packet is added to the access device and cannot be tampered with by the user. Therefore, the reliability of user authentication is high.
  • the access device encapsulates the IP request packet sent by the user to obtain a VXLAN request packet, and sends the VXLAN request packet to the service router, and
  • the service router parses the VXLAN request packet to obtain the IP address of the access device and the authentication information of the user, and then sends the IP address of the access device and the authentication information of the user to the authentication server to authenticate the user. Since the access device corresponding to each user is unique in the VXLAN, the IP address of the access device corresponding to the user for authentication and the authentication information of the user can be configured in the authentication server in advance, thereby implementing the VXLAN scenario. The user is authenticated according to the user's access information.
  • the local authentication binding entry including the IP address of the access device and the authentication information of the user is generated according to the authentication result, so that the service router parses the VXLAN after receiving the VXLAN service packet.
  • the service packet receives the IP address of the outer layer and the IP address of the access device that encapsulates the IP service packet in the IP service packet and the VXLAN service packet, and processes the IP service packet according to the local authentication binding entry. . That is, it is determined whether the source IP address of the outer layer and the IP address of the access device recorded in the local authentication binding entry are The same is to determine whether IP service packets are secure.
  • the IP address of the access device is the same as the IP address of the access device, the IP address of the IP address is the same as that of the local device. If the IP addresses of the recorded access devices are different, the IP service packets are insecure and the IP service packets are forbidden. This ensures the security of the network.
  • the external source IP address of the VXLAN request packet and the VXLAN service packet are added to the access device and cannot be tampered with by the user. Therefore, the reliability of user authentication and security binding check is high.
  • an embodiment of the present invention provides an access control device 50.
  • the access control device 50 can be used for a VXLAN.
  • the VXLAN can also include an access device.
  • the access control device 50 can include:
  • the first receiving module 501 is configured to receive a VXLAN request packet sent by the access device, where the VXLAN request packet is encapsulated by an Internet Protocol IP request packet sent by the user, where the VXLAN request packet includes an IP address of the access device and User's authentication information.
  • the first parsing module 502 is configured to parse the VXLAN request packet, and obtain an IP address of the access device and authentication information of the user.
  • the sending module 503 is configured to send the IP address of the access device and the authentication information of the user to the authentication server, so that the authentication server authenticates the user.
  • the second receiving module 504 is configured to receive an authentication result sent by the authentication server.
  • the control module 505 is configured to control the user according to the authentication result.
  • control module 505 is further configured to:
  • the access control device 50 may further include:
  • the generating module 506 is configured to generate a local authentication binding entry according to the authentication result when the authentication result indicates that the authentication succeeds, and the local authentication binding entry includes the IP address of the access device and the authentication information of the user.
  • the access control device 50 may include:
  • the first receiving module 501 is configured to receive a VXLAN request packet sent by the access device, where the VXLAN request packet is encapsulated by an Internet Protocol IP request packet sent by the user, where the VXLAN request packet includes an IP address of the access device and User's authentication information.
  • the first parsing module 502 is configured to parse the VXLAN request packet, and obtain an IP address of the access device and authentication information of the user.
  • the sending module 503 is configured to send the IP address of the access device and the authentication information of the user to the authentication server, so that the authentication server authenticates the user.
  • the second receiving module 504 is configured to receive an authentication result sent by the authentication server.
  • the control module 505 is configured to control the user according to the authentication result.
  • the generating module 506 is configured to generate a local authentication binding entry according to the authentication result when the authentication result indicates that the authentication succeeds, and the local authentication binding entry includes the IP address of the access device and the authentication information of the user.
  • the third receiving module 507 is configured to receive the VXLAN service packet, and the VXLAN service packet is encapsulated by the IP service packet sent by the user.
  • the second parsing module 508 is configured to parse the VXLAN service packet, obtain the IP service packet, and the VXLAN The outer source IP address of the VXLAN header of the service packet;
  • the processing module 509 is configured to process the IP service packet according to the local authentication binding entry.
  • processing module 509 is further configured to:
  • the IP service packet is forwarded when the IP address of the access device is the same as the IP address of the access device recorded in the local authentication binding entry.
  • the sending module 503 is further configured to:
  • an authentication packet including an IP address of the access device and authentication information of the user
  • the authentication server is a remote authentication dial-up user server RADIUS
  • the attribute field of the authentication packet 87 includes an IP address of the access device.
  • the VXLAN request packet sent by the access device received by the first receiving module includes the IP address of the access device and the authentication information of the user, so that the first parsing module parses and obtains Enter the IP address of the device and the authentication information of the user. Then, the sending module sends the IP address of the access device and the authentication information of the user to the authentication server to authenticate the user. Since the access device corresponding to each user is unique in the VXLAN, the IP address of the access device corresponding to the user for authentication and the authentication information of the user can be configured in the authentication server in advance, thereby implementing the VXLAN scenario. The user is authenticated according to the user's access information.
  • the local authentication binding entry including the IP address of the access device and the authentication information of the user is generated according to the authentication result, so that the service router parses the VXLAN after receiving the VXLAN service packet.
  • the service packet receives the IP address of the outer layer and the IP address of the access device that encapsulates the IP service packet in the IP service packet and the VXLAN service packet, and processes the IP service packet according to the local authentication binding entry. . It is determined whether the IP address of the access device is the same as the IP address of the access device recorded in the local authentication binding entry. If the IP address of the access device is the same as the IP address of the access device, the IP address of the IP address is the same as that of the local device.
  • IP service packets are insecure and the IP service packets are forbidden. This ensures the security of the network.
  • the external source IP address of the VXLAN request packet and the VXLAN service packet are added to the access device and cannot be tampered with by the user. Therefore, the reliability of user authentication and security binding check is high.
  • an embodiment of the present invention provides an access control system 60, which may include: a VXLAN 2 and an authentication server 1.
  • the VXLAN 2 may include: an access device 21 and a service router 22,
  • the service router 22 may include the access control device shown in Figures 5-1, 5-2, or 5-3.
  • FIG. 7 illustrates a structure of still another access control apparatus according to an embodiment of the present invention.
  • the access control apparatus may be used for a VXLAN.
  • the VXLAN further includes: an access device, where the access control apparatus includes at least one processor 701 (for example, CPU), at least one network interface 702 or other communication interface, memory 703, and at least one communication bus 704 are used to enable communication between these devices.
  • the processor 701 is configured to execute an executable module stored in the memory 703.
  • the memory 703 may include a high speed random access memory (English: random access memory, abbreviated as: RAM), and may also include a non-volatile memory (English: non-volatile memory), such as at least one disk storage.
  • the communication between the access control device and the at least one other network element is implemented by at least one network interface 702 (which may be wired or wireless), and may use an Internet, a wide area network, a local network, a metropolitan area network, or the like.
  • the memory 703 stores a program 7031 that can be executed by the processor 701 to implement the method illustrated in FIG. 3 or FIG. 4-1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Hardware Design (AREA)
  • Computing Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Small-Scale Networks (AREA)

Abstract

本发明公开了一种接入控制方法、装置及系统，属于通信领域。所述方法包括：接收接入设备发送的虚拟可扩展局域网VXLAN请求报文；解析VXLAN请求报文，得到接入设备的IP地址以及用户的认证信息；将接入设备的IP地址以及用户的认证信息发送至认证服务器，以便于认证服务器对用户进行认证；接收认证服务器发送的认证结果；根据认证结果控制用户。本发明实现了VXLAN场景下根据用户的接入信息对用户的认证。

Description

接入控制方法、装置及系统
本申请要求于2016年2月23日提交中国专利局、申请号为201610100415.5、发明名称为“接入控制方法、装置及系统”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及通信领域，特别涉及一种接入控制方法、装置及系统。
背景技术
随着通信技术的发展，出现了一种虚拟可扩展局域网(英文：virtual extensible local area network；简称：VXLAN)，VXLAN是三层网络虚拟化(network virtualization over layer 3；简称：NVo3)中的一种网络虚拟化技术，通过将虚拟机(英文：virtual machine；简称：VM)或物理服务器发出的数据包封装在用户数据报协议(英文：User Datagram Protocol；简称：UDP)报文中，并使用物理网络的因特网协议(英文：Internet Protocol；简称：IP)地址或媒体访问控制(英文：media access control；简称：MAC)地址作为报文头进行封装，然后在IP网络上传输，到达目的地后由隧道终结点解封装并将数据发送给目标VM或物理服务器。即，用户能够通过VXLAN与另一个网络中的对端用户通信。如图1所示，VXLAN包括接入设备01和业务路由器(英文：Service Router；简称：SR)02，且接入设备01和SR 02均为VXLAN的边缘设备，称为网络虚拟边缘(英文:network virtualization edge；简称：NVE)，每个NVE上配置了VXLAN隧道终端(英文：VXLAN Tunneling End Point；简称：VTEP)。
在传统的园区接入或者城域以太网宽带接入场景中，SR-02需要根据用户的物理位置信息，对用户进行认证、计费、授权，并在用户上线后需要对用户IP业务报文做安全绑定检查。具体来说，由接入设备01在动态主机配置协议(英文：Dynamic Host Configuration Protocol，简称：DHCP)报文中插入携带用户的物理位置信息的DHCP 82选项或者在以太网承载PPP协议(英文：Point-to-Point Protocol Over Ethernet，简称：PPPoE)报文中插入携带用户的接入信息(例如物理位置，环路标识等)的PPPoE+选项，并将DHCP报文或者PPPoE报文发送给SR-02，然后SR-02将DHCP报文或者PPPoE报文中携带的用户物理位置信息，以及用户名和/或密码、虚拟局域网(英文：virtual local area network；简称：VLAN)标识、SR用于接收DHCP报文或者PPPoE报文的端口中的一个或多个发送到认证服务器1对用户进行认证，认证成功后，用户才可以访问网络。
然而，在VXLAN网络中，配置了VTEP的接入设备通过等价多路径(英文：equal-cost multi-path routing；简称：ECMP)的方式向配置了VTEP的SR发送VXLAN报文，这样，就无法确定SR实际会通过哪个端口接收VXLAN报文，因此，无法预先在认证服务器中配置用于认证的信息，进而无法实现在VXLAN场景下根据用户的接入信息对用户进行认证。
发明内容
为了解决VXLAN场景下无法实现根据用户的接入信息对用户进行认证的问题，本发明提供了一种接入控制方法、装置及系统。所述技术方案如下：
第一方面，提供了一种接入控制方法，用于虚拟可扩展局域网VXLAN中的业务路由器，所述VXLAN还包括接入设备，所述方法包括：
接收所述接入设备发送的VXLAN请求报文，所述VXLAN请求报文是由用户发送的因特网协议IP请求报文封装得到的，所述VXLAN请求报文包括所述接入设备的IP地址以及所述用户的认证信息；
解析所述VXLAN请求报文，得到所述接入设备的IP地址以及所述用户的认证信息；
将所述接入设备的IP地址以及所述用户的认证信息发送至认证服务器，以便于所述认证服务器对所述用户进行认证；
接收所述认证服务器发送的认证结果；
根据所述认证结果控制所述用户。
由于接入设备将用户发送的IP请求报文进行封装得到VXLAN请求报文，并将VXLAN请求报文发送至业务路由器，并由该业务路由器对VXLAN请求报文进行解析得到接入设备的IP地址以及用户的认证信息，然后将接入设备的IP地址和用户的认证信息发送至认证服务器对用户进行认证。由于在VXLAN中，每个用户对应的接入设备是唯一的，因此，能够预先在认证服务器中配置用于认证的用户对应的接入设备的IP地址以及用户的认证信息，从而实现VXLAN场景下根据用户的接入信息对用户进行认证。
进一步的，由于在VLAN中用户认证的过程中，需要接入设备在IP请求报文中加插DHCP option 82或PPPoE option+才能确定用户的物理位置信息，所以用户认证的过程较复杂。本发明中，在进行认证的过程中，接入设备直接封装用户发送的IP请求报文，且VXLAN请求报文包括接入设备的IP地址，且接入设备的IP地址可以间接的反映用户的物理位置信息，所以本发明中用户认证的过程较简单。
现有技术中，由于用户名和密码能够被用户篡改，所以用户认证的可靠性较低；本发明中对接入设备的IP地址进行认证，由于VXLAN请求报文中的外层源IP地址为接入设备添加的，无法被用户篡改，因此，用户认证的可靠性较高。
可选的，所述根据所述认证结果控制所述用户，包括：
在所述认证结果指示认证成功时，允许所述用户接入网络；
在所述认证结果指示认证失败时，禁止所述用户接入网络。
可选的，所述方法还包括：
在所述认证结果指示认证成功时，根据所述认证结果生成本地认证绑定表项，所述本地认证绑定表项包括所述接入设备的IP地址以及所述用户的认证信息。
可选的，所述方法还包括：
接收VXLAN业务报文，所述VXLAN业务报文是由用户发送的IP业务报文封装得到的；
解析所述VXLAN业务报文，得到所述IP业务报文以及所述VXLAN业务报文的VXLAN头中外层源IP地址；
根据所述本地认证绑定表项处理所述IP业务报文。
可选的，所述根据所述本地认证绑定表项处理所述IP业务报文，包括：
在所述外层源IP地址与所述本地认证绑定表项中记录的所述接入设备的IP地址相同时，转发所述IP业务报文；
在所述外层源IP地址与所述本地认证绑定表项中记录的所述接入设备的IP地址不相同时，禁止转发所述IP业务报文。
进一步的，由于在认证结果指示认证成功时，根据认证结果生成包括接入设备的IP地址以及用户的认证信息的本地认证绑定表项，使得业务路由器在接收到VXLAN业务报文后，解析VXLAN业务报文，得到IP业务报文以及VXLAN业务报文中的外层源IP地址(即封装IP业务报文的接入设备的IP地址)，并根据本地认证绑定表项处理IP业务报文。即通过判断外层源IP地址与本地认证绑定表项中记录的接入设备的IP地址是否相同，来确定IP业务报文是否安全。在外层源IP地址与本地认证绑定表项中记录的接入设备的IP地址相同时，确定IP业务报文安全，转发IP业务报文；在外层源IP地址与本地认证绑定表项中记录的接入设备的IP地址不相同时，确定IP业务报文不安全，禁止转发IP业务报文，保证了网络的安全性。又由于VXLAN业务报文中的外层源IP地址为接入设备添加的，无法被用户篡改，因此，安全绑定检查的可靠性较高。
可选的，将所述接入设备的IP地址以及所述用户的认证信息发送至认证服务器，包括：
生成包括所述接入设备的IP地址以及所述用户的认证信息的认证报文；
将所述认证报文发送至所述认证服务器。
可选的，所述认证服务器为远程认证拨号用户服务器RADIUS，
所述认证报文的87号属性字段包括所述接入设备的IP地址。
第二方面，提供了一种接入控制装置，用于虚拟可扩展局域网VXLAN，所述VXLAN还包括接入设备，所述接入控制装置包括：
第一接收模块，用于接收所述接入设备发送的VXLAN请求报文，所述VXLAN请求报文是由用户发送的因特网协议IP请求报文封装得到的，所述VXLAN请求报文包括所述接入设备的IP地址以及所述用户的认证信息；
第一解析模块，用于解析所述VXLAN请求报文，得到所述接入设备的IP地址以及所述用户的认证信息；
发送模块，用于将所述接入设备的IP地址以及所述用户的认证信息发送至认证服务器，以便于所述认证服务器对所述用户进行认证；
第二接收模块，用于接收所述认证服务器发送的认证结果；
控制模块，用于根据所述认证结果控制所述用户。
可选的，所述控制模块还用于：
在所述认证结果指示认证成功时，允许所述用户接入网络；
在所述认证结果指示认证失败时，禁止所述用户接入网络。
可选的，所述接入控制装置还包括：
生成模块，用于在所述认证结果指示认证成功时，根据所述认证结果生成本地认证绑定表项，所述本地认证绑定表项包括所述接入设备的IP地址以及所述用户的认证信息。
可选的，所述接入控制装置还包括：
第三接收模块，用于接收VXLAN业务报文，所述VXLAN业务报文是由用户发送的IP业务报文封装得到的；
第二解析模块，用于解析所述VXLAN业务报文，得到所述IP业务报文以及所述VXLAN业务报文的VXLAN头中外层源IP地址；
处理模块，用于根据所述本地认证绑定表项处理所述IP业务报文。
可选的，所述处理模块还用于：
在所述外层源IP地址与所述本地认证绑定表项中记录的所述接入设备的IP地址相同时，转发所述IP业务报文；
在所述外层源IP地址与所述本地认证绑定表项中记录的所述接入设备的IP地址不相同时，禁止转发所述IP业务报文。
可选的，所述发送模块还用于：
生成包括所述接入设备的IP地址以及所述用户的认证信息的认证报文；
将所述认证报文发送至所述认证服务器。
可选的，所述认证服务器为远程认证拨号用户服务器RADIUS，
所述认证报文的87号属性字段包括所述接入设备的IP地址。
第三方面，提供了一种接入控制系统，所述接入控制系统包括：虚拟可扩展局域网VXLAN和认证服务器，所述VXLAN包括：接入设备和业务路由器，
所述业务路由器包括：第二方面所述的接入控制装置。
第四方面，提供了一种接入控制装置，用于虚拟可扩展局域网VXLAN，所述VXLAN还包括接入设备，所述接入控制装置包括：至少一个处理器、至少一个网络接口、存储器和至少一个通信总线，所述处理器用于执行所述存储器中存储的程序，所述程序包括：
接收所述接入设备发送的VXLAN请求报文，所述VXLAN请求报文是由用户发送的因特网协议IP请求报文封装得到的，所述VXLAN请求报文包括所述接入设备的IP地址以及所述用户的认证信息；
解析所述VXLAN请求报文，得到所述接入设备的IP地址以及所述用户的认证信息；
将所述接入设备的IP地址以及所述用户的认证信息发送至认证服务器，以便于所述认证服务器对所述用户进行认证；
接收所述认证服务器发送的认证结果；
根据所述认证结果控制所述用户。
可选的，所述根据所述认证结果控制所述用户，包括：
在所述认证结果指示认证成功时，允许所述用户接入网络；
在所述认证结果指示认证失败时，禁止所述用户接入网络。
可选的，所述程序还包括：
在所述认证结果指示认证成功时，根据所述认证结果生成本地认证绑定表项，所述本地认证绑定表项包括所述接入设备的IP地址以及所述用户的认证信息。
可选的，所述程序还包括：
接收VXLAN业务报文，所述VXLAN业务报文是由用户发送的IP业务报文封装得到的；
解析所述VXLAN业务报文，得到所述IP业务报文以及所述VXLAN业务报文的VXLAN头中外层源IP地址；
根据所述本地认证绑定表项处理所述IP业务报文。
可选的，所述根据所述本地认证绑定表项处理所述IP业务报文，包括：
在所述外层源IP地址与所述本地认证绑定表项中记录的所述接入设备的IP地址相同时，转发所述IP业务报文；
在所述外层源IP地址与所述本地认证绑定表项中记录的所述接入设备的IP地址不相同时，禁止转发所述IP业务报文。
可选的，将所述接入设备的IP地址以及所述用户的认证信息发送至所述认证服务器，包括：
生成包括所述接入设备的IP地址以及所述用户的认证信息的认证报文；
将所述认证报文发送至所述认证服务器。
可选的，所述认证服务器为远程认证拨号用户服务器RADIUS，
所述认证报文的87号属性字段包括所述接入设备的IP地址。
第五方面，提供了一种接入控制系统，所述接入控制系统包括：虚拟可扩展局域网VXLAN和认证服务器，所述VXLAN包括：接入设备和业务路由器，
所述业务路由器包括：第四方面所述的接入控制装置。
综上所述，本发明提供了一种接入控制方法、装置及系统，在接入控制方法中，接入设备将用户发送的IP请求报文进行封装得到VXLAN请求报文，并将VXLAN请求报文发送至业务路由器，并由该业务路由器对VXLAN请求报文进行解析得到接入设备的IP地址以及用户的认证信息，然后将接入设备的IP地址和用户的认证信息发送至认证服务器对用户进行认证。由于在VXLAN中，每个用户对应的接入设备是唯一的，因此，能够预先在认证服务器中配置用于认证的用户对应的接入设备的IP地址以及用户的认证信息，从而实现VXLAN场景下根据用户的接入信息对用户进行认证。
进一步的，由于在认证结果指示认证成功时，根据认证结果生成包括接入设备的IP地址以及用户的认证信息的本地认证绑定表项，使得业务路由器在接收到VXLAN业务报文后，解析VXLAN业务报文，得到IP业务报文以及VXLAN业务报文中的外层源IP地址(即封装IP业务报文的接入设备的IP地址)，并根据本地认证绑定表项处理IP业务报文。即通过判断外层源IP地址与本地认证绑定表项中记录的接入设备的IP地址是否相同，来确定IP业务报文是否安全。在外层源IP地址与本地认证绑定表项中记录的接入设备的IP地址相同时，确定IP业务报文安全，转发IP业务报文；在外层源IP地址与本地认证绑定表项中记录的接入设备的IP地址不相同时，确定IP业务报文不安全，禁止转发IP业务报文，保证了网络的安全性。又由于VXLAN请求报文和VXLAN业务报文中的外层源IP地址均为接入设备添加的，无法被用户篡改，因此，用户认证以及安全绑定检查的可靠性均较高。
附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍。
图1为现有技术提供的一种VXLAN的结构示意图；
图2为本发明实施例提供的一种接入控制方法的应用场景示意图；
图3为本发明实施例提供的一种接入控制方法的方法流程图；
图4-1为本发明实施例提供的另一种接入控制方法的方法流程图；
图4-2为本发明实施例提供的一种VXLAN请求报文的结构示意图；
图4-3为本发明实施例提供的一种发送IP业务报文的方法流程图；
图5-1为本发明实施例提供的一种接入控制装置的结构示意图；
图5-2为本发明实施例提供的另一种接入控制装置的结构示意图；
图5-3为本发明实施例提供的又一种接入控制装置的结构示意图；
图6为本发明实施例提供的一种接入控制系统的结构示意图；
图7为本发明实施例提供的再一种接入控制装置的结构示意图。
具体实施方式
为使本发明的目的、技术方案和优点更加清楚，下面将结合附图对本发明实施方式作进一步地详细描述。
图2为本发明实施例提供的一种接入控制方法的应用场景示意图。如图2所示，VXLAN 2包括：接入设备21、业务路由器22。其中，接入设备21可以为接入交换机或者接入路由器，该业务路由器可以为宽带网络网关(英文：broadband network gateway；简称：BNG)或宽带远程接入服务器(英文：broadband remote access server；简称：BRAS)，或其他具有认证功能的网关。用户能够登录在用户设备3上，用户设备3接入接入设备21，接入设备21接入业务路由器22，业务路由器22可以同时接入认证服务器1和网络(图2中未示出)。示例的，该网络可以为与用户设备3进行通信的其他用户设备所在的目标网络，或者接入该目标网络的核心网络。认证服务器1可以为远程认证拨号用户服务器(英文：Remote Access Dial-In User Service；简称：RADIUS)。
如图3所示，本发明实施例提供了一种接入控制方法，该接入控制方法可以用于图2中的业务路由器22，该接入控制方法可以包括：
步骤301、接收接入设备发送的VXLAN请求报文，VXLAN请求报文是由用户发送的IP请求报文封装得到的，VXLAN请求报文包括接入设备的IP地址以及用户的认证信息。
步骤302、解析VXLAN请求报文，得到接入设备的IP地址以及用户的认证信息。
步骤303、将接入设备的IP地址以及用户的认证信息发送至认证服务器，以便于认证服务器对用户进行认证。
步骤304、接收认证服务器发送的认证结果。
步骤305、根据认证结果控制用户。
其中，步骤305可以包括：在认证结果指示认证成功时，允许用户接入网络；在认证结果指示认证失败时，禁止用户接入网络。
为了实现本发明，需要预先在认证服务器上配置认证规则，每条认证规则包括接入设备的IP地址以及至少一种用户信息，用户信息为能够唯一标识一个用户的信息，例如，用户名、密码等。此外，每条认证规则还可以包括用户的VXLAN标识等其他信息。
综上所述，由于本发明实施例提供的接入控制方法中，接入设备将用户发送的IP请求报文进行封装得到VXLAN请求报文，并将VXLAN请求报文发送至业务路由器，并由该业务路由器对VXLAN请求报文进行解析得到接入设备的IP地址以及用户的认证信息，然后将接入设备的IP地址和用户的认证信息发送至认证服务器对用户进行认证。由于在VXLAN中，每个用户对应的接入设备是唯一的，因此，能够预先在认证服务器中配置用于认证的用户对应的接入设备的IP地址以及用户的认证信息，从而实现VXLAN场景下根据用户的接入信息对用户进行认证。
可选的，该接入控制方法还可以包括：
在所述认证结果指示认证成功时，根据所述认证结果生成本地认证绑定表项，所述本地认证绑定表项包括所述接入设备的IP地址以及所述用户的认证信息。
可选的，该接入控制方法还可以包括：
接收VXLAN业务报文，所述VXLAN业务报文是由用户发送的IP业务报文封装得到的；
解析所述VXLAN业务报文，得到所述IP业务报文以及所述VXLAN业务报文的VXLAN头中外层源IP地址；
根据所述本地认证绑定表项处理所述IP业务报文。
可选的，所述根据所述本地认证绑定表项处理所述IP业务报文，包括：
在所述外层源IP地址与所述本地认证绑定表项中记录的所述接入设备的IP地址相同时，转发所述IP业务报文；
在所述外层源IP地址与所述本地认证绑定表项中记录的所述接入设备的IP地址不相同时，禁止转发所述IP业务报文。
可选的，步骤303可以包括：
生成包括所述接入设备的IP地址以及所述用户的认证信息的认证报文；
将所述认证报文发送至所述认证服务器。
可选的，所述认证服务器为远程认证拨号用户服务器RADIUS，所述认证报文的87号属性字段包括所述接入设备的IP地址。
综上所述，由于本发明实施例提供的接入控制方法中，接入设备将用户发送的IP请求报文进行封装得到VXLAN请求报文，并将VXLAN请求报文发送至业务路由器，并由该业务路由器对VXLAN请求报文进行解析得到接入设备的IP地址以及用户的认证信息，然后将接入设备的IP地址和用户的认证信息发送至认证服务器对用户进行认证。由于在VXLAN中，每个用户对应的接入设备是唯一的，因此，能够预先在认证服务器中配置用于认证的用户对应的接入设备的IP地址以及用户的认证信息，从而实现VXLAN场景下根据用户的接入信息对用户进行认证。
进一步的，由于在认证结果指示认证成功时，根据认证结果生成包括接入设备的IP地址以及用户的认证信息的本地认证绑定表项，使得业务路由器在接收到VXLAN业务报文后，解析VXLAN业务报文，得到IP业务报文以及VXLAN业务报文中的外层源IP地址(即封装IP业务报文的接入设备的IP地址)，并根据本地认证绑定表项处理IP业务报文。即通过判断外层源IP地址与本地认证绑定表项中记录的接入设备的IP地址是否相同，来确定IP业务报文是否安全。在外层源IP地址与本地认证绑定表项中记录的接入 设备的IP地址相同时，确定IP业务报文安全，转发IP业务报文；在外层源IP地址与本地认证绑定表项中记录的接入设备的IP地址不相同时，确定IP业务报文不安全，禁止转发IP业务报文，保证了网络的安全性。又由于VXLAN请求报文和VXLAN业务报文中的外层源IP地址均为接入设备添加的，无法被用户篡改，因此，用户认证以及安全绑定检查的可靠性均较高。
如图4-1所示，本发明实施例提供了另一种接入控制方法，该接入控制方法以用户为合法用户为例进行解释说明，该接入控制方法可以包括：
步骤401、用户设备向接入设备发送IP请求报文。
用户设备接入接入设备，接入设备接入业务路由器，业务路由器可以同时接入认证服务器和网络，示例的，该网络可以为与该用户设备进行通信的其他用户设备所在的目标网络，或者接入该目标网络的核心网络，该目标网络可以为因特网(英文：Internet)。
用户可以在用户设备上输入用户名和密码，使得用户设备生成包括用户的认证信息(例如，用户名和密码)的IP请求报文，并将生成的IP请求报文发送至用户设备接入的接入设备。示例的，用户名和密码可以是预先分配给用户的，用户设备生成的IP请求报文的具体结构可以参考在VLAN中用户设备生成的IP请求报文的具体结构，本发明实施例在此不作赘述。
步骤402、接入设备封装IP请求报文，得到VXLAN请求报文。
接入设备在接收到用户设备发送的IP请求报文后，接入设备可以采用将MAC地址封装在UDP中的封装方式封装该IP请求报文，从而得到VXLAN请求报文，且该VXLAN请求报文可以包括该接入设备的IP地址、用户的认证信息(例如，用户名和密码)以及该接入设备所在的VXLAN的标识。
图4-2为本发明实施例提供的一种VXLAN请求报文的结构示意图，如图4-2所示，该VXLAN请求报文可以依次包括：外层Ethernet头(英文：outer Ethernet header)封装部分、外层IP头(英文：outer IP header)封装部分、外层UDP头(英文：outer UDP header)封装部分、VXLAN头(英文：VXLAN header)封装部分以及IP请求报文。
Outer Ethernet header封装部分可以依次包括：目的MAC地址(英文：MAC DA)字段、源MAC地址(英文：MAC SA)字段、VLAN类型(英文：VLAN type)字段、VLAN标识(英文：VLAN identifier；简称：VLAN ID)字段和以太网类型(英文：Ethernet type)字段。其中，MAC DA字段表示：目的虚拟机所属VTEP上路由表中直连的下一跳MAC地址；MAC SA字段表示：发送VXLAN请求报文的虚拟机所属VTEP的MAC地址；当IP请求报文中携带VLAN Tag(标签)时，VLAN Type字段的取值为0x8100；当Ethernet Type字段对应的协议报文为IP协议报文时，Ethernet Type字段的取值为0x0800。
Outer IP header封装部分可以依次包括：前空闲字段、协议(英文：protocol)字段、后空闲字段、源IP地址(英文：IP SA)字段和目的IP地址(英文：IP DA)字段。其中，IP SA字段表示接入设备的IP地址；IP DA字段表示业务路由器的IP地址。
Outer UDP header封装部分可以依次包括：源端口(英文：source port)字段、目的端口(英文：destport)字段、UDP长度(英文：UDP length)字段和UDP校验和(英文：UDP checksum)字段。其中，destport字段所指示的端口号可以为4789，source  port字段所指示的源端口号可以通过对IP请求报文采用哈希算法进行计算得来。
VXLAN header封装部分依次包括：VXLAN标记(英文：VXLAN flags)字段、前预留(英文：reserved)字段、VXLAN标识(英文：VXLAN identifier；简称：VNI)字段和后reserved字段，其中，VNI字段可以包括接入设备所在的VXLAN的标识。
IP请求报文依次包括：内层以太网头(英文：inner Ethernet header)字段、内层IP头(英文：inner IP header)字段和有效载荷(英文：payload)字段。其中，Payload字段包括用户输入的用户名和密码。
步骤403、接入设备向业务路由器发送VXLAN请求报文。
接入设备在将用户设备发送的IP请求报文进行封装并得到VXLAN请求报文后，接入设备可以将包含接入设备的IP地址、VXLAN的标识以及用户的认证信息的VXLAN请求报文发送至业务路由器。
步骤404、业务路由器解析VXLAN请求报文，得到接入设备的IP地址、VXLAN的标识以及用户的认证信息。
业务路由器在接收到VXLAN请求报文后，可以解析该VXLAN请求报文，得到该VXLAN请求报文中包括的接入设备的IP地址、用户名、密码和VXLAN的标识。例如，从VXLAN请求报文中的Outer IP header封装部分得到接入设备的IP地址，从VXLAN请求报文中的VXLAN header封装部分得到接入设备所在的VXLAN的标识，从VXLAN请求报文中的IP请求报文得到用户名和密码。
步骤405、业务路由器生成包含接入设备的IP地址、VXLAN的标识以及用户的认证信息的认证报文。
示例的，当认证服务器可以为RADIUS时，该业务路由器可以根据RADIUS协议、接入设备的IP地址、用户名、密码和VXLAN的标识，生成包括接入设备的IP地址、用户名、密码和VXLAN的标识的认证报文，具体的，生成的认证报文的具体结构可以参考现有技术中根据RADIUS协议生成的认证报文的具体结构。示例的，该认证报文的第87号属性字段可以包括接入设备的IP地址，该87号属性字段可以为网络附属存储端口标识(英文：network attached storage port identifier；简称：NAS-Port-Id)字段。
步骤406、业务路由器向认证服务器发送认证报文。
由于业务路由器接入认证服务器，所以业务路由器可以将该认证报文发送至认证服务器，认证服务器可以为RADIUS，需要说明的是，认证服务器还可以为除RADIUS外的其他认证服务器，本发明实施例对此不做限定。
步骤407、认证服务器对认证报文进行认证。
具体的，认证服务器上可以预先配置有认证规则，每条认证规则包括接入设备的IP地址以及至少一种用户信息，用户信息为能够唯一标识一个用户的信息，例如，用户名、密码等。此外，每条认证规则还可以包括用户的VXLAN标识等其他信息。示例的，认证服务器上可以设置有用于记录认证规则的认证表项。
认证表项可以如表1所示，该认证表项中记录了两条认证规则。其中，第一条认证规则包括：ZHANGSAN(用户名)、110(密码)、A1(接入设备的IP地址)以及VXLAN-B1(接入设备所在的VXLAN的标识)。第二条认证规则包括：LISI(用户名)、120(密码)、A2(接入设备的IP地址)以及VXLAN-B2(接入设备所在的VXLAN的标识)。
表1
用户名 密码 接入设备的IP地址 接入设备所在的VXLAN的标识
ZHANGSAN 110 A1 VXLAN-B1
LISI 120 A2 VXLAN-B2
认证服务器在接收到认证报文后，认证服务器能够获取认证报文中的接入设备的IP地址、用户名、密码和VXLAN的标识，并在认证服务器上的认证表项中查找该认证表项中是否存在一条认证规则同时包括该认证报文中的接入设备的IP地址、用户名、密码和VXLAN的标识。如果该认证表项中存在一条认证规则同时包括该认证报文中的接入设备的IP地址、用户名、密码和VXLAN的标识，则该认证服务器可以确定认证成功，并生成用于指示认证结果为认证成功的第一报文。如果该认证表项中不存在一条认证规则同时包括该认证报文中的接入设备的IP地址、用户名、密码和VXLAN的标识，则该认证服务器可以确定认证失败，并生成用于指示认证结果为认证失败的第二报文。
由于本发明实施例以用户为合法用户为例，所以认证服务器上的认证表项中存在一条认证规则同时包括该认证报文中的接入设备的IP地址、用户名、密码以及VXLAN标识，认证服务器可以生成用于指示认证结果为认证成功的第一报文。
步骤408、认证服务器向业务路由器发送认证结果。
认证服务器在对该认证报文进行认证后，认证服务器可以将认证结果发送至业务路由器。示例的，该认证服务器可以将用于指示认证结果为认证成功的第一报文发送至业务路由器。
步骤409、业务路由器控制用户设备接入目标网络。
由于本发明实施例中的用户为合法用户，所以，步骤408中认证服务器发送给业务路由器的认证结果指示认证成功，该业务路由器允许用户接入网络，并可以控制用户设备接入网络，以及通知用户认证成功且已接入网络。
需要说明的是，若认证结果指示认证成功，则在步骤409之后，该业务路由器可以根据认证结果生成本地认证绑定表项，该本地认证绑定表项可以包括认证成功的接入设备的IP地址以及用户的认证信息。示例的，该本地认证绑定表项可以如表2所示，表2中记录了第一用户的认证信息C1与接入设备的IP地址A1的对应关系，以及第二用户的认证信息C2与接入设备的IP地址A2的对应关系。可选的，表2中的用户的认证信息C1或C2可以包括用户名、密码、用户的IP地址等信息。
表2
用户的认证信息 接入设备的IP地址
C1 A1
C2 A2
步骤410、用户设备通过接入设备和业务路由器向网络发送IP业务报文。
在业务路由器控制用户设备接入网络后，用户设备可以生成IP业务报文，并通过接入设备和业务路由器将IP业务报文发送至目标网络。
如图4-3所示，步骤410可以包括：
步骤4101、用户设备向接入设备发送IP业务报文。
在用户设备接入网络后，用户设备可以根据需要生成IP业务报文，并将生成的IP业务报文发送至用户设备接入的接入设备，该IP业务报文可以包括用户的至少一种认证信息，该至少一种认证信息可以包括用户的IP地址。需要说明的是，用户设备生成的IP业务报文的具体结构，可以参考在现有技术中用户设备生成的IP业务报文的具体结构，本发明实施例在此不作赘述。
步骤4102、接入设备封装IP业务报文，得到VXLAN业务报文。
示例的，接入设备在接收到用户设备发送的IP业务报文后，接入设备可以采用将MAC地址封装在UDP中的封装方式封装该IP业务报文，得到VXLAN业务报文。需要说明的是，步骤4102中接入设备封装IP业务报文的具体方式可以参考步骤402中接入设备封装IP请求报文的具体方式，本发明实施例在此不做赘述。
步骤4103、接入设备向业务路由器发送VXLAN业务报文。
接入设备在将用户设备发送的IP业务报文进行封装并得到VXLAN业务报文后，接入设备可以将VXLAN业务报文发送至业务路由器。
步骤4104、业务路由器解析VXLAN业务报文，得到外层源IP地址以及IP业务报文。
业务路由器在接收到VXLAN业务报文后，可以解析该VXLAN业务报文，得到该VXLAN业务报文中的信息，如从VXLAN业务报文中的Outer IP header封装部分得到外层源IP地址，从VXLAN业务报文中的IP业务报文得到用户的IP地址。
步骤4105、业务路由器判断外层源IP地址与本地认证绑定表项中记录的接入设备的IP地址是否相同。
一方面，在步骤401中用户设备发送至接入设备的IP请求报文中可以包括用户的IP地址，在步骤404中，业务路由器解析VXLAN请求报文还可以得到用户的IP地址。在步骤408之后，即在业务路由器接收到的认证结果指示认证成功之后，业务路由器建立的本地认证绑定表项中的认证信息中可以包括用户的IP地址。
另一方面，在步骤401中用户设备发送至接入设备的IP请求报文中可以不包括用户的IP地址，在步骤404中，业务路由器解析VXLAN请求报文无法得到用户的IP地址。在步骤407中，若认证成功，则认证服务器可以给用户分配一个IP地址，具体的，认证服务器发送至业务路由器的认证结果中可以包括分配给用户的IP地址。在步骤408中业务路由器接收到认证结果后，业务路由器可以将分配给用户的IP地址发送至用户设备，使得步骤4101中用户设备发送至接入设备的IP业务报文包括用户的IP地址，进一步的，该业务路由器还可以将分配给用户的IP地址存储在本地认证绑定表项中的认证信息中。
在步骤4105中，业务路由器可以根据步骤4104中解析得到的IP业务报文中的用户的认证信息(如用户的IP地址)，在本地认证绑定表项中查找用户的IP地址对应的接入设备的IP地址，并判断步骤4104中解析得到的外层源IP地址与该本地认证绑定表项中的接入设备的IP地址是否相同，若外层源IP地址与该本地认证绑定表项中的接入设备的IP地址相同，则确定该VXLAN业务报文中的IP业务报文安全；若外层源IP地址与该本地认证绑定表项中的接入设备的IP地址不同，则确定该VXLAN业务报文中的IP业务报文不安全。
步骤4106、在外层源IP地址与本地认证绑定表项中记录的接入设备的IP地址相同时，业务路由器向网络转发IP业务报文。
若外层源IP地址与本地认证绑定表项中记录的接入设备的IP地址相同，则业务路由器可以确定解析得到的IP业务报文安全，并将解析得到的IP业务报文转发至网络，示例的，可以将该IP业务报文转发至目标网络，或者将该IP业务报文转发至接入目标网络的核心网络，进而由核心网络将该IP业务报文转发至目标网络。
若用户为非法用户，则步骤408中认证服务器发送给业务路由器的认证结果指示认证失败，该业务路由器可以禁止用户接入网络，并通知用户认证失败。
需要说明的是，若用户为非法用户，一方面，在该业务路由器禁止用户接入网络后，该非法用户仍然可以控制用户设备生成IP业务报文，并将生成的IP业务报文发送至接入设备，由接入设备封装用户设备生成的IP业务报文，得到VXLAN业务报文，并将VXLAN业务报文发送至业务路由器；另一方面，步骤401中用户设备可以不生成IP请求报文，而直接生成IP业务报文，并将生成的IP业务报文发送至接入设备，由接入设备封装IP业务报文得到VXLAN业务报文，并将VXLAN业务报文发送至业务路由器。
业务路由器在接收到VXLAN业务报文后，可以解析该VXLAN业务报文，并判断外层源IP地址与本地认证绑定表项中记录的接入设备的IP地址是否相同。由于用户为非法用户，所以外层源IP地址与本地认证绑定表项中记录的接入设备的IP地址不相同，该业务路由器可以确定VXLAN业务报文中的IP业务报文不安全，并禁止转发IP业务报文，保证了网络的安全性。
现有技术中，由于在VLAN中用户认证的过程中，需要接入设备在IP请求报文中加插DHCP option82或PPPoE option+才能确定用户的物理位置信息，所以用户认证的过程较复杂。本发明中，在进行认证的过程中，接入设备直接封装用户发送的IP请求报文，且VXLAN请求报文包括接入设备的IP地址，且接入设备的IP地址可以间接的反映用户的物理位置信息，所以本发明中用户认证的过程较简单。且现有技术中，对用户输入的用户名和密码进行认证，由于用户名和密码能够被用户篡改，所以用户认证的可靠性较低；本发明中对接入设备的IP地址进行认证，由于VXLAN请求报文中的外层源IP地址为接入设备添加的，无法被用户篡改，因此，用户认证的可靠性较高。
综上所述，由于本发明实施例提供的接入控制方法中，接入设备将用户发送的IP请求报文进行封装得到VXLAN请求报文，并将VXLAN请求报文发送至业务路由器，并由该业务路由器对VXLAN请求报文进行解析得到接入设备的IP地址以及用户的认证信息，然后将接入设备的IP地址和用户的认证信息发送至认证服务器对用户进行认证。由于在VXLAN中，每个用户对应的接入设备是唯一的，因此，能够预先在认证服务器中配置用于认证的用户对应的接入设备的IP地址以及用户的认证信息，从而实现VXLAN场景下根据用户的接入信息对用户进行认证。
进一步的，由于在认证结果指示认证成功时，根据认证结果生成包括接入设备的IP地址以及用户的认证信息的本地认证绑定表项，使得业务路由器在接收到VXLAN业务报文后，解析VXLAN业务报文，得到IP业务报文以及VXLAN业务报文中的外层源IP地址(即封装IP业务报文的接入设备的IP地址)，并根据本地认证绑定表项处理IP业务报文。即通过判断外层源IP地址与本地认证绑定表项中记录的接入设备的IP地址是否相 同，来确定IP业务报文是否安全。在外层源IP地址与本地认证绑定表项中记录的接入设备的IP地址相同时，确定IP业务报文安全，转发IP业务报文；在外层源IP地址与本地认证绑定表项中记录的接入设备的IP地址不相同时，确定IP业务报文不安全，禁止转发IP业务报文，保证了网络的安全性。又由于VXLAN请求报文和VXLAN业务报文中的外层源IP地址均为接入设备添加的，无法被用户篡改，因此，用户认证以及安全绑定检查的可靠性均较高。
如图5-1所示，本发明实施例提供了一种接入控制装置50，该接入控制装置50可以用于VXLAN，VXLAN还可以包括接入设备，该接入控制装置50可以包括：
第一接收模块501，用于接收接入设备发送的VXLAN请求报文，VXLAN请求报文是由用户发送的因特网协议IP请求报文封装得到的，VXLAN请求报文包括接入设备的IP地址以及用户的认证信息。
第一解析模块502，用于解析VXLAN请求报文，得到接入设备的IP地址以及用户的认证信息。
发送模块503，用于将接入设备的IP地址以及用户的认证信息发送至认证服务器，以便于认证服务器对用户进行认证。
第二接收模块504，用于接收认证服务器发送的认证结果。
控制模块505，用于根据认证结果控制用户。
可选的，控制模块505还可以用于：
在认证结果指示认证成功时，允许用户接入网络；
在认证结果指示认证失败时，禁止用户接入网络。
如图5-2所示，在图5-1所示的基础上，该接入控制装置50还可以包括：
生成模块506，用于在认证结果指示认证成功时，根据认证结果生成本地认证绑定表项，本地认证绑定表项包括接入设备的IP地址以及用户的认证信息。
如图5-3所示，在图5-2的基础上，该接入控制装置50可以包括：
第一接收模块501，用于接收接入设备发送的VXLAN请求报文，VXLAN请求报文是由用户发送的因特网协议IP请求报文封装得到的，VXLAN请求报文包括接入设备的IP地址以及用户的认证信息。
第一解析模块502，用于解析VXLAN请求报文，得到接入设备的IP地址以及用户的认证信息。
发送模块503，用于将接入设备的IP地址以及用户的认证信息发送至认证服务器，以便于认证服务器对用户进行认证。
第二接收模块504，用于接收认证服务器发送的认证结果。
控制模块505，用于根据认证结果控制用户。
生成模块506，用于在认证结果指示认证成功时，根据认证结果生成本地认证绑定表项，本地认证绑定表项包括接入设备的IP地址以及用户的认证信息。
第三接收模块507，用于接收VXLAN业务报文，VXLAN业务报文是由用户发送的IP业务报文封装得到的；
第二解析模块508，用于解析VXLAN业务报文，得到IP业务报文以及所述VXLAN 业务报文的VXLAN头中外层源IP地址；
处理模块509，用于根据本地认证绑定表项处理IP业务报文。
可选的，处理模块509还可以用于：
在外层源IP地址与本地认证绑定表项中记录的接入设备的IP地址相同时，转发IP业务报文；
在外层源IP地址与本地认证绑定表项中记录的接入设备的IP地址不相同时，禁止转发IP业务报文。
可选的，发送模块503还用可以于：
生成包括接入设备的IP地址以及用户的认证信息的认证报文；
将认证报文发送至认证服务器。
可选的，认证服务器为远程认证拨号用户服务器RADIUS，认证报文的87号属性字段包括接入设备的IP地址。
由于本发明实施例提供的接入控制装置中，第一接收模块接收的接入设备发送的VXLAN请求报文中包括接入设备的IP地址以及用户的认证信息，使得第一解析模块解析得到接入设备的IP地址以及用户的认证信息，然后发送模块将接入设备的IP地址和用户的认证信息发送至认证服务器对用户进行认证。由于在VXLAN中，每个用户对应的接入设备是唯一的，因此，能够预先在认证服务器中配置用于认证的用户对应的接入设备的IP地址以及用户的认证信息，从而实现对VXLAN场景下根据用户的接入信息对用户进行认证。
进一步的，由于在认证结果指示认证成功时，根据认证结果生成包括接入设备的IP地址以及用户的认证信息的本地认证绑定表项，使得业务路由器在接收到VXLAN业务报文后，解析VXLAN业务报文，得到IP业务报文以及VXLAN业务报文中的外层源IP地址(即封装IP业务报文的接入设备的IP地址)，并根据本地认证绑定表项处理IP业务报文。即通过判断外层源IP地址与本地认证绑定表项中记录的接入设备的IP地址是否相同，来确定IP业务报文是否安全。在外层源IP地址与本地认证绑定表项中记录的接入设备的IP地址相同时，确定IP业务报文安全，转发IP业务报文；在外层源IP地址与本地认证绑定表项中记录的接入设备的IP地址不相同时，确定IP业务报文不安全，禁止转发IP业务报文，保证了网络的安全性。又由于VXLAN请求报文和VXLAN业务报文中的外层源IP地址均为接入设备添加的，无法被用户篡改，因此，用户认证以及安全绑定检查的可靠性均较高。
如图6所示，本发明实施例提供了一种接入控制系统60，该接入控制系统60可以包括：VXLAN 2和认证服务器1，VXLAN 2可以包括：接入设备21和业务路由器22，该业务路由器22可以包括图5-1、图5-2或图5-3所示的接入控制装置。
图7描述了本发明实施例提供的再一种接入控制装置的结构，该接入控制装置可以用于VXLAN，VXLAN还包括：接入设备，该接入控制装置包括至少一个处理器701(例如CPU)，至少一个网络接口702或者其他通信接口，存储器703，和至少一个通信总线704，用于实现这些装置之间的通信。处理器701用于执行存储器703中存储的可执行模块， 例如计算机程序。存储器703可能包括高速随机存取存储器(英文：random access memory，简称：RAM)，也可能还包括非易失性存储器(英文：non-volatile memory)，例如至少一个磁盘存储器。通过至少一个网络接口702(可以是有线或者无线)实现该接入控制装置与至少一个其他网元之间的通信，可以使用互联网，广域网，本地网，城域网等。
在一些实施方式中，存储器703存储了程序7031，程序7031可以被处理器701执行以实现图3或图4-1所示的方法。
需要说明的是，本发明实施例提供的接入控制方法步骤的先后顺序可以进行适当调整，步骤也可以根据情况进行相应增减，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化的方法，都应涵盖在本发明的保护范围之内，因此不再赘述。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的接入控制装置和接入控制系统的具体工作过程，可以参考前述接入控制方法实施例中的对应过程，在此不再赘述。
以上所述仅为本发明的较佳实施例，并不用以限制本发明，凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包括在本发明的保护范围之内。

Claims (15)

  1. 一种接入控制方法，其特征在于，用于虚拟可扩展局域网VXLAN中的业务路由器，所述VXLAN还包括接入设备，所述方法包括：
    接收所述接入设备发送的VXLAN请求报文，所述VXLAN请求报文是由用户发送的因特网协议IP请求报文封装得到的，所述VXLAN请求报文包括所述接入设备的IP地址以及所述用户的认证信息；
    解析所述VXLAN请求报文，得到所述接入设备的IP地址以及所述用户的认证信息；
    将所述接入设备的IP地址以及所述用户的认证信息发送至认证服务器，以便于所述认证服务器对所述用户进行认证；
    接收所述认证服务器发送的认证结果；
    根据所述认证结果控制所述用户。
  2. 根据权利要求1所述的方法，其特征在于，所述根据所述认证结果控制所述用户，包括：
    在所述认证结果指示认证成功时，允许所述用户接入网络；
    在所述认证结果指示认证失败时，禁止所述用户接入网络。
  3. 根据权利要求2所述的方法，其特征在于，所述方法还包括：
    在所述认证结果指示认证成功时，根据所述认证结果生成本地认证绑定表项，所述本地认证绑定表项包括所述接入设备的IP地址以及所述用户的认证信息。
  4. 根据权利要求3所述的方法，其特征在于，所述方法还包括：
    接收VXLAN业务报文，所述VXLAN业务报文是由用户发送的IP业务报文封装得到的；
    解析所述VXLAN业务报文，得到所述IP业务报文以及所述VXLAN业务报文的VXLAN头中外层源IP地址；
    根据所述本地认证绑定表项处理所述IP业务报文。
  5. 根据权利要求4所述的方法，其特征在于，所述根据所述本地认证绑定表项处理所述IP业务报文，包括：
    在所述外层源IP地址与所述本地认证绑定表项中记录的所述接入设备的IP地址相同时，转发所述IP业务报文；
    在所述外层源IP地址与所述本地认证绑定表项中记录的所述接入设备的IP地址不相同时，禁止转发所述IP业务报文。
  6. 根据权利要求1至5任一所述的方法，其特征在于，将所述接入设备的IP地址以及所述用户的认证信息发送至认证服务器，包括：
    生成包括所述接入设备的IP地址以及所述用户的认证信息的认证报文；
    将所述认证报文发送至所述认证服务器。
  7. 根据权利要求6所述的方法，其特征在于，所述认证服务器为远程认证拨号用户服务器RADIUS，
    所述认证报文的87号属性字段包括所述接入设备的IP地址。
  8. 一种接入控制装置，其特征在于，用于虚拟可扩展局域网VXLAN，所述VXLAN还包括接入设备，所述接入控制装置包括：
    第一接收模块，用于接收所述接入设备发送的VXLAN请求报文，所述VXLAN请求报文是由用户发送的因特网协议IP请求报文封装得到的，所述VXLAN请求报文包括所述接入设备的IP地址以及所述用户的认证信息；
    第一解析模块，用于解析所述VXLAN请求报文，得到所述接入设备的IP地址以及所述用户的认证信息；
    发送模块，用于将所述接入设备的IP地址以及所述用户的认证信息发送至认证服务器，以便于所述认证服务器对所述用户进行认证；
    第二接收模块，用于接收所述认证服务器发送的认证结果；
    控制模块，用于根据所述认证结果控制所述用户。
  9. 根据权利要求8所述的接入控制装置，其特征在于，所述控制模块还用于：
    在所述认证结果指示认证成功时，允许所述用户接入网络；
    在所述认证结果指示认证失败时，禁止所述用户接入网络。
  10. 根据权利要求9所述的接入控制装置，其特征在于，所述接入控制装置还包括：
    生成模块，用于在所述认证结果指示认证成功时，根据所述认证结果生成本地认证绑定表项，所述本地认证绑定表项包括所述接入设备的IP地址以及所述用户的认证信息。
  11. 根据权利要求10所述的接入控制装置，其特征在于，所述接入控制装置还包括：
    第三接收模块，用于接收VXLAN业务报文，所述VXLAN业务报文是由用户发送的IP业务报文封装得到的；
    第二解析模块，用于解析所述VXLAN业务报文，得到所述IP业务报文以及所述VXLAN业务报文的VXLAN头中外层源IP地址；
    处理模块，用于根据所述本地认证绑定表项处理所述IP业务报文。
  12. 根据权利要求11所述的接入控制装置，其特征在于，所述处理模块还用于：
    在所述外层源IP地址与所述本地认证绑定表项中记录的所述接入设备的IP地址相同时，转发所述IP业务报文；
    在所述外层源IP地址与所述本地认证绑定表项中记录的所述接入设备的IP地址不 相同时，禁止转发所述IP业务报文。
  13. 根据权利要求8至12任一所述的接入控制装置，其特征在于，所述发送模块还用于：
    生成包括所述接入设备的IP地址以及所述用户的认证信息的认证报文；
    将所述认证报文发送至所述认证服务器。
  14. 根据权利要求13所述的接入控制装置，其特征在于，所述认证服务器为远程认证拨号用户服务器RADIUS，
    所述认证报文的87号属性字段包括所述接入设备的IP地址。
  15. 一种接入控制系统，其特征在于，所述接入控制系统包括：虚拟可扩展局域网VXLAN和认证服务器，所述VXLAN包括：接入设备和业务路由器，
    所述业务路由器包括：权利要求8至14任一所述的接入控制装置。
PCT/CN2017/072904 2016-02-23 2017-02-04 接入控制方法、装置及系统 Ceased WO2017143903A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP17755732.9A EP3410648B1 (en) 2016-02-23 2017-02-04 Method, device and system for access control
US16/109,801 US11095478B2 (en) 2016-02-23 2018-08-23 Access control method, apparatus, and system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201610100415.5A CN107104872B (zh) 2016-02-23 2016-02-23 接入控制方法、装置及系统
CN201610100415.5 2016-02-23

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US16/109,801 Continuation US11095478B2 (en) 2016-02-23 2018-08-23 Access control method, apparatus, and system

Publications (1)

Publication Number Publication Date
WO2017143903A1 true WO2017143903A1 (zh) 2017-08-31

Family

ID=59658878

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2017/072904 Ceased WO2017143903A1 (zh) 2016-02-23 2017-02-04 接入控制方法、装置及系统

Country Status (4)

Country Link
US (1) US11095478B2 (zh)
EP (1) EP3410648B1 (zh)
CN (1) CN107104872B (zh)
WO (1) WO2017143903A1 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3591906A1 (en) * 2018-06-26 2020-01-08 Huawei Technologies Co., Ltd. Vxlan implementation method, network device, and communications system
CN114286420A (zh) * 2021-12-21 2022-04-05 深圳创维数字技术有限公司 基于pon技术的网关的锁定方法、装置、服务器以及介质

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10757099B2 (en) * 2016-07-15 2020-08-25 Intraway R&D Sa System and method for providing fraud control
CN107800602B (zh) * 2016-08-29 2021-01-15 华为技术有限公司 一种报文处理方法、设备及系统
CN107786613B (zh) * 2016-08-30 2020-05-12 新华三技术有限公司 宽带远程接入服务器bras转发实现方法和装置
US9913143B1 (en) * 2016-11-28 2018-03-06 Amazon Technologies, Inc. Auto-provisioning device
CN107547325B (zh) * 2017-09-27 2020-07-07 新华三技术有限公司 报文转发方法及装置
SE542532C2 (en) * 2018-09-28 2020-06-02 Telia Co Ab A method and a network device for providing services to user devices in a wireless network
EP3672194A1 (en) * 2018-12-17 2020-06-24 Telia Company AB Solution for receiving network service
CN110266656B (zh) * 2019-05-30 2021-11-09 世纪龙信息网络有限责任公司 免密认证身份识别方法、装置及计算机设备
CN110417789B (zh) * 2019-08-01 2021-12-03 深圳市网心科技有限公司 服务器连接方法、电子设备、系统及介质
US12425956B2 (en) * 2019-10-28 2025-09-23 Telefonaktiebolaget Lm Ericsson (Publ) Methods for access security at operation and maintenance, O and M, support
CN113132303A (zh) * 2019-12-30 2021-07-16 奇安信科技集团股份有限公司 由防火墙执行的信息处理方法和装置
CN113645174B (zh) * 2020-04-27 2023-04-18 华为技术有限公司 Vxlan接入认证方法以及vtep设备
CN113162978A (zh) * 2021-03-16 2021-07-23 中国卫通集团股份有限公司 一种基于虚拟认证技术的船载通讯系统、装置和执行方法
CN115348046A (zh) * 2021-05-13 2022-11-15 华为技术有限公司 一种报文传输方法及装置
CN116132163B (zh) * 2023-02-10 2024-08-02 南京百敖软件有限公司 使用dhcp协议实现设备限定局域网络围栏的方法
CN118473710A (zh) * 2024-04-18 2024-08-09 新华三技术有限公司 一种PPPoE报文的认证方法和BRAS设备

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101043331A (zh) * 2006-06-30 2007-09-26 华为技术有限公司 一种为网络设备分配地址的系统和方法
CN101436934A (zh) * 2008-10-20 2009-05-20 福建星网锐捷网络有限公司 一种控制用户上网的方法、系统及设备
CN101789906A (zh) * 2010-02-24 2010-07-28 杭州华三通信技术有限公司 用户接入认证的方法和系统
CN102857517A (zh) * 2012-09-29 2013-01-02 华为技术有限公司 认证方法、宽带远程接入服务器以及认证服务器
CN103209159A (zh) * 2012-01-13 2013-07-17 中国电信股份有限公司 门户认证方法和系统
US20160036771A1 (en) * 2014-07-29 2016-02-04 Aruba Networks, Inc. Client device address assignment following authentication

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004096380A (ja) * 2002-08-30 2004-03-25 Fujitsu Ltd 経路制御装置及び経路制御システム
US7562384B1 (en) * 2003-03-07 2009-07-14 Cisco Technology, Inc. Method and apparatus for providing a secure name resolution service for network devices
US7653813B2 (en) * 2006-02-08 2010-01-26 Motorola, Inc. Method and apparatus for address creation and validation
CN101739906B (zh) 2009-12-28 2012-10-10 鸿富锦精密工业（深圳）有限公司 双屏幕电子装置
CN102255916A (zh) * 2011-07-26 2011-11-23 中国科学院计算机网络信息中心 接入认证方法、设备、服务器及系统
US8751650B2 (en) * 2012-05-10 2014-06-10 Cisco Technology, Inc. Method and apparatus for supporting access control lists in a multi-tenant environment
US8893258B2 (en) * 2012-06-11 2014-11-18 Cisco Technology, Inc. System and method for identity based authentication in a distributed virtual switch network environment
IN2013DE00266A (zh) * 2013-01-30 2015-06-19 Hewlett Packard Development Co
US20140280846A1 (en) * 2013-03-14 2014-09-18 Douglas Gourlay System and method for abstracting network policy from physical interfaces and creating portable network policy
US9374294B1 (en) * 2013-11-05 2016-06-21 Cisco Technology, Inc. On-demand learning in overlay networks
US9729578B2 (en) * 2014-01-10 2017-08-08 Arista Networks, Inc. Method and system for implementing a network policy using a VXLAN network identifier
US10171559B2 (en) * 2014-11-21 2019-01-01 Cisco Technology, Inc. VxLAN security implemented using VxLAN membership information at VTEPs

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101043331A (zh) * 2006-06-30 2007-09-26 华为技术有限公司 一种为网络设备分配地址的系统和方法
CN101436934A (zh) * 2008-10-20 2009-05-20 福建星网锐捷网络有限公司 一种控制用户上网的方法、系统及设备
CN101789906A (zh) * 2010-02-24 2010-07-28 杭州华三通信技术有限公司 用户接入认证的方法和系统
CN103209159A (zh) * 2012-01-13 2013-07-17 中国电信股份有限公司 门户认证方法和系统
CN102857517A (zh) * 2012-09-29 2013-01-02 华为技术有限公司 认证方法、宽带远程接入服务器以及认证服务器
US20160036771A1 (en) * 2014-07-29 2016-02-04 Aruba Networks, Inc. Client device address assignment following authentication

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3591906A1 (en) * 2018-06-26 2020-01-08 Huawei Technologies Co., Ltd. Vxlan implementation method, network device, and communications system
EP3876482A1 (en) * 2018-06-26 2021-09-08 Huawei Technologies Co., Ltd. Vxlan implementation method, network device, and communications system
US11271779B2 (en) 2018-06-26 2022-03-08 Huawei Technologies Co., Ltd. VXLAN implementation method, network device, and communications system
US11563603B2 (en) 2018-06-26 2023-01-24 Huawei Technologies Co., Ltd. VXLAN implementation method, network device, and communications system
US11888652B2 (en) 2018-06-26 2024-01-30 Huawei Technologies Co., Ltd. VXLAN implementation method, network device, and communications system
CN114286420A (zh) * 2021-12-21 2022-04-05 深圳创维数字技术有限公司 基于pon技术的网关的锁定方法、装置、服务器以及介质
CN114286420B (zh) * 2021-12-21 2023-09-05 深圳创维数字技术有限公司 基于pon技术的网关的锁定方法、装置、服务器以及介质

Also Published As

Publication number Publication date
EP3410648A4 (en) 2018-12-05
EP3410648B1 (en) 2022-04-06
CN107104872B (zh) 2020-11-03
US20190013968A1 (en) 2019-01-10
US11095478B2 (en) 2021-08-17
EP3410648A1 (en) 2018-12-05
CN107104872A (zh) 2017-08-29

Similar Documents

Publication Publication Date Title
CN107104872B (zh) 接入控制方法、装置及系统
CN110650076B (zh) Vxlan的实现方法，网络设备和通信系统
US9979711B2 (en) Authentication for VLAN tunnel endpoint (VTEP)
CN110650075B (zh) 基于vxlan的组策略实现方法、网络设备和组策略实现系统
CN103747499B (zh) 用于针对有线和无线节点的公共控制协议的方法和设备
CN106713057B (zh) 用于进行隧道检测的方法、装置及系统
CN104283858B (zh) 控制用户终端接入的方法、装置及系统
US11888904B2 (en) Packet sending method, packet receiving method, and network device
CN109150673B (zh) 基于bras系统的报文封装方法、装置及系统
US11431730B2 (en) Systems and methods for extending authentication in IP packets
WO2018041152A1 (zh) 宽带远程接入服务器控制平面功能和转发平面功能的分离
JP2019515608A (ja) アクセス制御
CN115865389A (zh) 为基础设施业务指派安全组标签并将安全组标签保存在动态分段中的监听分组中
EP3457657B1 (en) Access control method and system, and switch
CN107113221A (zh) 使用通用路由封装的网络虚拟化双向转发检测
EP3664403B1 (en) User authentication of bras under architecture of mutually separated forwarding and control
CN114465755B (zh) 基于IPSec传输异常的检测方法、装置及存储介质
CN105704104A (zh) 一种认证方法及接入设备
CN104243254B (zh) 一种PPPoE接入方法及设备
CN118802198A (zh) 接入网络的安全检测系统、方法及电子设备
CN120416364A (zh) 数据转发增强方法、装置、网络设备、介质和程序产品
CN117040965A (zh) 通信方法及装置
CN105743867A (zh) 一种网络权限联动控制方法和设备

Legal Events

Date Code Title Description
NENP Non-entry into the national phase

Ref country code: DE

WWE Wipo information: entry into national phase

Ref document number: 2017755732

Country of ref document: EP

ENP Entry into the national phase

Ref document number: 2017755732

Country of ref document: EP

Effective date: 20180830

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17755732

Country of ref document: EP

Kind code of ref document: A1