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Example for Configuring a WAPI-Certificate Security Policy

Configuration Process

You need to configure and maintain WLAN features and functions in different profiles. These WLAN profiles include regulatory domain profile, radio profile, VAP profile, AP system profile, AP wired port profile, WIDS profile, WDS profile, and Mesh profile. When configuring WLAN services, you need to set related parameters in the WLAN profiles and bind the profiles to the AP group or APs. Then the configuration is automatically delivered to and takes effect on the APs. WLAN profiles can reference one another; therefore, you need to know the relationships among the profiles before configuring them. For details about the profile relationships and their basic configuration procedure, see WLAN Service Configuration Procedure.

Networking Requirements

As shown in Figure 1, the enterprise's AC connects to the egress gateway (Router) and ASU certificate server, and connects to the AP through SwitchA. The WLAN with the SSID wlan-net is available for employees to access network resources. The gateway also functions as a DHCP server to provide IP addresses on the 10.23.101.0/24 network segment for STAs. The AC controls and manages STAs.

Because the WLAN is open to users, there are potential security risks to enterprise information if no security policy is configured for the WLAN. To meet enterprise's high information security requirement and implement bidirectional authentication between the WLAN clients and server, configure a WAPI security policy. Compared with WPA/WPA2, an ASU certificate server and WAPI encryption provide higher security for WLAN networks.

Figure 1 Networking diagram for configuring a WAPI-certificate security policy

Configuration Roadmap

  1. Configure WLAN basic services so that STAs can access the WLAN.
  2. Configure a WAPI security policy using certificate authentication in a security profile and import the obtained certificates to ensure data security.
Table 1 Data planning

Item

Data

Management VLAN

VLAN 100

Service VLAN

VLAN 101

Source interface on the AC

VLANIF 100: 10.23.100.1/24

SwitchA VLAN

VLAN 100

DHCP server

  • IP address that the AC assigns to the AP: 10.23.100.2-10.23.100.254/24
  • IP addresses that Router assigns to STAs: 10.23.101.2-10.23.101.254/24

Gateway for the AP

VLANIF 100: 10.23.100.1/24

Gateway for STAs

VLANIF 101: 10.23.101.1/24

AP group

  • Name: ap-group1
  • Referenced profile: VAP profile wlan-vap and regulatory domain profile domain1

Regulatory domain profile

  • Name: domain1
  • Country code: CN

SSID profile

  • Name: wlan-ssid
  • SSID name: wlan-net

Security profile

  • Name: wlan-security
  • Security policy: WAPI-certificate

VAP profile

  • Name: wlan-vap
  • Forwarding mode: tunnel forwarding
  • Service VLAN: VLAN 101
  • Referenced profile: SSID profile wlan-ssid and security profile wlan-security

Configuration Notes

  • No ACK mechanism is provided for multicast packet transmission on air interfaces. In addition, wireless links are unstable. To ensure stable transmission of multicast packets, they are usually sent at low rates. If a large number of such multicast packets are sent from the network side, the air interfaces may be congested. You are advised to configure multicast packet suppression to reduce impact of a large number of low-rate multicast packets on the wireless network. Exercise caution when configuring the rate limit; otherwise, the multicast services may be affected.
    • In direct forwarding mode, you are advised to configure multicast packet suppression on switch interfaces connected to APs.
    • In tunnel forwarding mode, you are advised to configure multicast packet suppression in traffic profiles of the AC.
    For details on how to configure traffic suppression, see How Do I Configure Multicast Packet Suppression to Reduce Impact of a Large Number of Low-Rate Multicast Packets on the Wireless Network?.
  • Configure port isolation on the interfaces of the device directly connected to APs. If port isolation is not configured and direct forwarding is used, a large number of unnecessary broadcast packets may be generated in the VLAN, blocking the network and degrading user experience.

  • In tunnel forwarding mode, the management VLAN and service VLAN cannot be the same. Only packets from the management VLAN are transmitted between the AC and APs. Packets from the service VLAN are not allowed between the AC and APs.

Procedure

  1. Set the NAC mode to unified on the AC so that users can connect to the network properly.

    <HUAWEI> system-view
    [HUAWEI] authentication unified-mode

    If the NAC mode is changed from traditional to unified, the unified mode takes effect after you save the configuration and restart the device.

  2. Configure SwitchA and the AC so that the AP and AC can transmit CAPWAP packets.

    # Add GE0/0/1 that connects SwitchA to the AP to management VLAN 100 and add GE0/0/2 that connects SwitchA to the AC to the same VLAN.

    <HUAWEI> system-view
    [HUAWEI] sysname SwitchA
    [SwitchA] vlan batch 100
    [SwitchA] interface gigabitethernet 0/0/1
    [SwitchA-GigabitEthernet0/0/1] port link-type trunk
    [SwitchA-GigabitEthernet0/0/1] port trunk pvid vlan 100
    [SwitchA-GigabitEthernet0/0/1] port trunk allow-pass vlan 100
    [SwitchA-GigabitEthernet0/0/1] port-isolate enable
    [SwitchA-GigabitEthernet0/0/1] quit
    [SwitchA] interface gigabitethernet 0/0/2
    [SwitchA-GigabitEthernet0/0/2] port link-type trunk
    [SwitchA-GigabitEthernet0/0/2] port trunk allow-pass vlan 100
    [SwitchA-GigabitEthernet0/0/2] quit

    # Add GE0/0/1 that connects the AC to SwitchA to VLAN 100.

    [HUAWEI] sysname AC
    [AC] vlan batch 100
    [AC] interface gigabitethernet 0/0/1
    [AC-GigabitEthernet0/0/1] port link-type trunk
    [AC-GigabitEthernet0/0/1] port trunk allow-pass vlan 100
    [AC-GigabitEthernet0/0/1] quit

  3. Configure the AC to communicate with the upstream device.

    # Configure VLANIF 101 (service VLAN), VLANIF 102, and VLANIF 103.

    [AC] vlan batch 101 102 103
    [AC] interface vlanif 101
    [AC-Vlanif101] ip address 10.23.101.1 24
    [AC-Vlanif101] quit
    [AC] interface vlanif 102
    [AC-Vlanif102] ip address 10.23.102.2 24
    [AC-Vlanif102] quit
    [AC] interface vlanif 103
    [AC-Vlanif103] ip address 10.23.103.2 24
    [AC-Vlanif103] quit

    # Add GE0/0/2 that connects the AC to the Router to VLAN 102.

    [AC] interface gigabitethernet 0/0/2
    [AC-GigabitEthernet0/0/2] port link-type trunk
    [AC-GigabitEthernet0/0/2] port trunk allow-pass vlan 102
    [AC-GigabitEthernet0/0/2] quit

    # Add GE0/0/3 that connects the AC to the ASU server to VLAN 103.

    [AC] interface gigabitethernet 0/0/3
    [AC-GigabitEthernet0/0/3] port link-type trunk
    [AC-GigabitEthernet0/0/3] port trunk pvid vlan 103
    [AC-GigabitEthernet0/0/3] port trunk allow-pass vlan 103
    [AC-GigabitEthernet0/0/3] quit

    # On the AC, configure a static route.

    [AC] ip route-static 0.0.0.0 0.0.0.0 10.23.102.1

  4. Configure the AC to assign an IP address to the AP and the Router to assign IP addresses to STAs.

    Configure the DNS server as required. The common methods are as follows:
    • In interface address pool scenarios, run the dhcp server dns-list ip-address &<1-8> command in the VLANIF interface view.
    • In global address pool scenarios, run the dns-list ip-address &<1-8> command in the IP address pool view.

    # Configure the AC to assign an IP address to the AP from an interface address pool.

    [AC] dhcp enable
    [AC] interface vlanif 100
    [AC-Vlanif100] ip address 10.23.100.1 24
    [AC-Vlanif100] dhcp select interface
    [AC-Vlanif100] quit

    # Configure the AC as a DHCP relay agent, and specify the DHCP server IP address on the DHCP relay agent.

    [AC] interface vlanif 101
    [AC-Vlanif101] dhcp select relay
    [AC-Vlanif101] dhcp relay server-ip 10.23.102.1
    [AC-Vlanif101] quit

    # Configure the Router as a DHCP server to assign IP addresses to STAs from a global address pool. The egress gateway address of the DHCP client is 10.23.101.1, and the network segment of the global address pool is 10.23.101.0/24.

    <Huawei> system-view
    [Huawei] sysname Router
    [Router] dhcp enable
    [Router] ip pool sta
    [Router-ip-pool-sta] gateway-list 10.23.101.1
    [Router-ip-pool-sta] network 10.23.101.0 mask 24
    [Router-ip-pool-sta] quit
    [Router] vlan batch 102
    [Router] interface vlanif 102
    [Router-Vlanif102] ip address 10.23.102.1 24
    [Router-Vlanif102] dhcp select global
    [Router-Vlanif102] quit
    [Router] interface gigabitethernet 2/0/0
    [Router-GigabitEthernet2/0/0] port link-type trunk
    [Router-GigabitEthernet2/0/0] port trunk allow-pass vlan 102
    [Router-GigabitEthernet2/0/0] quit
    [Router] ip route-static 10.23.101.0 24 10.23.102.2

  5. Configure the AP to go online.

    # Create an AP group and add the AP to the AP group.

    [AC] wlan
    [AC-wlan-view] ap-group name ap-group1
    [AC-wlan-ap-group-ap-group1] quit

    # Create a regulatory domain profile, configure the AC country code in the profile, and apply the profile to the AP group.

    [AC-wlan-view] regulatory-domain-profile name domain1
    [AC-wlan-regulate-domain-domain1] country-code cn
    [AC-wlan-regulate-domain-domain1] quit
    [AC-wlan-view] ap-group name ap-group1
    [AC-wlan-ap-group-ap-group1] regulatory-domain-profile domain1
    Warning: Modifying the country code will clear channel, power and antenna gain configurations of the radio and reset the AP. Continue?[Y/N]:y  
    [AC-wlan-ap-group-ap-group1] quit
    [AC-wlan-view] quit
    # Configure the AC's source interface.
    [AC] capwap source interface vlanif 100
    # Import the AP offline on the AC and add the AP to AP group ap-group1. Assume that the AP's MAC address is 60de-4476-e360. Configure a name for the AP based on the AP's deployment location, so that you can know where the AP is deployed from its name. For example, name the AP area_1 if it is deployed in Area 1.

    The default AP authentication mode is MAC address authentication. If the default settings are retained, you do not need to run the ap auth-mode mac-auth command.

    In this example, the AP5030DN is used and has two radios: radio 0 (2.4 GHz radio) and radio 1 (5 GHz radio).

    [AC] wlan
    [AC-wlan-view] ap auth-mode mac-auth
    [AC-wlan-view] ap-id 0 ap-mac 60de-4476-e360
    [AC-wlan-ap-0] ap-name area_1
    [AC-wlan-ap-0] ap-group ap-group1
    Warning: This operation may cause AP reset. If the country code changes, it will clear channel, power and antenna gain configuration s of the radio, Whether to continue? [Y/N]:y  
    [AC-wlan-ap-0] quit

    # After the AP is powered on, run the display ap all command to check the AP state. If the State field is displayed as nor, the AP goes online normally.

    [AC-wlan-view] display ap all
    Total AP information:
    nor  : normal          [1]
    --------------------------------------------------------------------------------
    ID   MAC            Name   Group     IP            Type            State STA Uptime
    --------------------------------------------------------------------------------
    0    60de-4476-e360 area_1 ap-group1 10.23.100.254 AP5030DN       nor   0   10S
    --------------------------------------------------------------------------------
    Total: 1

  6. Configure WLAN service parameters.

    # Create the security profile wlan-security and set the security policy to WAPI-certificate.

    [AC-wlan-view] security-profile name wlan-security
    [AC-wlan-sec-prof-wlan-security] security wapi certificate
    [AC-wlan-sec-prof-wlan-security] wapi asu ip 10.23.103.1
    [AC-wlan-sec-prof-wlan-security] wapi import certificate ac format pem file-name flash:/ae.cer
    [AC-wlan-sec-prof-wlan-security] wapi import certificate asu format pem file-name flash:/as.cer
    [AC-wlan-sec-prof-wlan-security] wapi import certificate issuer format pem file-name flash:/as.cer
    [AC-wlan-sec-prof-wlan-security] wapi import private-key format pem file-name flash:/ae.cer
    [AC-wlan-sec-prof-wlan-security] quit
    • Before configuring WAPI-certificate authentication, upload the certificate file to the flash memory of the device.
    • If the authentication system uses only two certificates, the issuer certificate is the same as the ASU certificate, with the same file name. If the authentication system uses three certificates, the issuer certificate and ASU certificate are different from each other and both must be imported.
    • The certificates must be valid and correct.

    # Create the SSID profile wlan-ssid and set the SSID name to wlan-net.

    [AC-wlan-view] ssid-profile name wlan-ssid
    [AC-wlan-ssid-prof-wlan-ssid] ssid wlan-net
    [AC-wlan-ssid-prof-wlan-ssid] quit

    # Create the VAP profile wlan-vap, set the data forwarding mode and service VLAN, and apply the security profile and SSID profile to the VAP profile.

    [AC-wlan-view] vap-profile name wlan-vap
    [AC-wlan-vap-prof-wlan-vap] forward-mode tunnel
    [AC-wlan-vap-prof-wlan-vap] service-vlan vlan-id 101
    [AC-wlan-vap-prof-wlan-vap] security-profile wlan-security
    [AC-wlan-vap-prof-wlan-vap] ssid-profile wlan-ssid
    [AC-wlan-vap-prof-wlan-vap] quit

    # Bind the VAP profile wlan-vap to the AP group and apply the profile to radio 0 and radio 1 of the AP.

    [AC-wlan-view] ap-group name ap-group1
    [AC-wlan-ap-group-ap-group1] vap-profile wlan-vap wlan 1 radio 0
    [AC-wlan-ap-group-ap-group1] vap-profile wlan-vap wlan 1 radio 1
    [AC-wlan-ap-group-ap-group1] quit

  7. Set channels and power for the AP radios.

    Automatic channel and power calibration functions are enabled by default. The manual channel and power configurations take effect only when these two functions are disabled. The channel and power configuration for the AP radios in this example is for reference only. In actual scenarios, configure channels and power for AP radios based on country codes of APs and network planning results.

    # Disable automatic channel and power calibration functions of radio 0, and configure the channel and power for radio 0.
    [AC-wlan-view] ap-id 0
    [AC-wlan-ap-0] radio 0
    [AC-wlan-radio-0/0] calibrate auto-channel-select disable
    [AC-wlan-radio-0/0] calibrate auto-txpower-select disable
    [AC-wlan-radio-0/0] channel 20mhz 6
    Warning: This action may cause service interruption. Continue?[Y/N]y 
    [AC-wlan-radio-0/0] eirp 127
    [AC-wlan-radio-0/0] quit
    # Disable automatic channel and power calibration functions of radio 1, and configure the channel and power for radio 1.
    [AC-wlan-ap-0] radio 1
    [AC-wlan-radio-0/1] calibrate auto-channel-select disable
    [AC-wlan-radio-0/1] calibrate auto-txpower-select disable
    [AC-wlan-radio-0/1] channel 20mhz 149
    Warning: This action may cause service interruption. Continue?[Y/N]y 
    [AC-wlan-radio-0/1] eirp 127
    [AC-wlan-radio-0/1] quit
    [AC-wlan-ap-0] quit

  8. Verify the configuration.

    • The WLAN with SSID wlan-net is available for mobile phones connected to the AP.
    • The mobile phone obtains an IP address after it associates with the WLAN. The mobile phone is automatically authenticated and can access the WLAN.

Configuration Files

  • SwitchA configuration file

    #
    sysname SwitchA
    #
    vlan batch 100
    #
    interface GigabitEthernet0/0/1
     port link-type trunk
     port trunk pvid vlan 100
     port trunk allow-pass vlan 100
     port-isolate enable
    #
    interface GigabitEthernet0/0/2
     port link-type trunk
     port trunk allow-pass vlan 100
    #
    return
  • Router configuration file

    #
    sysname Router
    #
    vlan batch 102
    #
    dhcp enable
    #
    ip pool sta
     gateway-list 10.23.101.1
     network 10.23.101.0 mask 255.255.255.0
    #
    interface Vlanif102
     ip address 10.23.102.1 255.255.255.0
     dhcp select global
    #
    interface GigabitEthernet2/0/0
     port link-type trunk
     port trunk allow-pass vlan 102
    #
    ip route-static 10.23.101.0 255.255.255.0 10.23.102.2
    #
    return
    
  • AC configuration file

    #
     sysname AC
    #
    vlan batch 100 to 103
    #
    dhcp enable
    #
    interface Vlanif100
     ip address 10.23.100.1 255.255.255.0
     dhcp select interface
    #
    interface Vlanif101
     ip address 10.23.101.1 255.255.255.0
     dhcp select relay
     dhcp relay server-ip 10.23.102.1
    #
    interface Vlanif102
     ip address 10.23.102.2 255.255.255.0
    #
    interface Vlanif103
     ip address 10.23.103.2 255.255.255.0
    #
    interface GigabitEthernet0/0/1
     port link-type trunk
     port trunk allow-pass vlan 100
    #
    interface GigabitEthernet0/0/2
     port link-type trunk
     port trunk allow-pass vlan 102
    #
    interface GigabitEthernet0/0/3
     port link-type trunk
     port trunk pvid vlan 103
     port trunk allow-pass vlan 103
    #
    ip route-static 0.0.0.0 0.0.0.0 10.23.102.1
    #
    capwap source interface vlanif100
    #
    wlan
     security-profile name wlan-security
      security wapi certificate
      wapi asu ip 10.23.103.1
      wapi import certificate ac format pem file-name flash:/ae.cer
      wapi import certificate asu format pem file-name flash:/as.cer
      wapi import certificate issuer format pem file-name flash:/as.cer
      wapi import private-key format pem file-name flash:/ae.cer
     ssid-profile name wlan-ssid
      ssid wlan-net
     vap-profile name wlan-vap
      forward-mode tunnel
      service-vlan vlan-id 101
      ssid-profile wlan-ssid
      security-profile wlan-security
     regulatory-domain-profile name domain1
     ap-group name ap-group1
      ap-system-profile wlan-system
      regulatory-domain-profile domain1
      radio 0
       vap-profile wlan-vap wlan 1
      radio 1
       vap-profile wlan-vap wlan 1
     ap-id 0 type-id 19 ap-mac 60de-4476-e360 ap-sn 210235554710CB000042
      ap-name area_1
      ap-group ap-group1
      radio 0
       channel 20mhz 6
       eirp 127
       calibrate auto-channel-select disable    
       calibrate auto-txpower-select disable
      radio 1
       channel 20mhz 149
       eirp 127
       calibrate auto-channel-select disable   
       calibrate auto-txpower-select disable
    #
    return
Copyright © Huawei Technologies Co., Ltd.
Copyright © Huawei Technologies Co., Ltd.
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