H3C Access Points
Comware 7 NAT Configuration Examples

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Contents

Introduction· 1

Prerequisites· 1

Example: Configuring NAT· 1

Network configuration· 1

Procedures· 1

Configuring AP· 1

Verifying the configuration· 3

Configuration files· 3

Related documentation· 4

 

Introduction

The following information provides an example for configuring NAT.

Prerequisites

This document applies to Comware 7-based APs. Procedures and information in the examples might be slightly different depending on the software or hardware version of the APs.

The configuration examples in this document were created and verified in a lab environment, and all the devices were started with the factory default configuration. When you are working on a live network, make sure you understand the potential impact of every command on your network.

This document assumes that you have basic knowledge of NAT.

Example: Configuring NAT

Network configuration

As shown in Figure 1, the wireless clients access the network through the AP. The AP obtains an IP address through a DHCP server in the IP network.

To allow the internal wireless clients to access the external network, it is required to perform the following configuration:

·     Configure the AP to act as the DHCP server to assign IP addresses to the wireless clients.

·     Configure outbound NAT on the AP to perform address translation for wireless clients.

Figure 1 Network diagram

 

Procedures

Configuring AP

1.     Configure VLANs and VLAN interfaces on the AP:

# Create VLAN 100 and VLAN interface, and assign an IP address to the VLAN interface.

<AP> system-view

[AP] vlan 100

[AP-vlan100] quit

[AP] interface vlan-interface 100

[AP-Vlan-interface100] ip address 192.1.0.1 24

[AP-Vlan-interface100] quit

# Configure the upstream interface VLAN-interface 1 to obtain an IP address through DHCP.

[AP] interface vlan-interface 1

[AP-Vlan-interface1] ip address dhcp-alloc

[AP-Vlan-interface1] quit

2.     Configure the wireless service template:

# Create service template service and enter its view.

[AP] wlan service-template service

# Configure service as the SSID.

[AP-wlan-st-service] ssid service

# Assign clients coming online through service template 100 to VLAN 100.

[AP-wlan-st-service] vlan 100

# Configure the PSK AKM mode and the 12345678 plaintext key.

[AP-wlan-st-service] akm mode psk

[AP-wlan-st-service] preshared-key pass-phrase simple 12345678

# Configure CCMP as the cipher suite and RSN as the security IE.

[AP-wlan-st-service] cipher-suite ccmp

[AP-wlan-st-service] security-ie rsn

# Enable the service template.

[AP-wlan-st-service] service-template enable

[AP-wlan-st-service] quit

# Enter interface view of WLAN-Radio 1/0/1.

[AP] interface wlan-radio 1/0/1

# Bind service template service to interface WLAN-Radio 1/0/1.

[AP-WLAN-Radio1/0/1] service-template service

[AP-WLAN-Radio1/0/1] quit

3.     Configure the DHCP server:

# Configure DHCP address pool 100 for address allocation to the wireless clients.

[AP] dhcp server ip-pool 100

[AP-dhcp-pool-100] network 192.1.0.0 mask 255.255.255.0

[AP-dhcp-pool-100] gateway-list 192.1.0.1

[AP-dhcp-pool-100] quit

# Enable the DHCP service.

[AP] dhcp enable

4.     Configure NAT:

# Configure ACL 2000 to identify packets source from 192.1.0.0.

[AP] acl basic 2000

[AP-acl-ipv4-basic-2000] rule 0 permit source 192.1.0.0 0.0.0.255

[AP-acl-ipv4-basic-2000] quit

# Configure an outbound dynamic PAT rule on VLAN-interface 1 to translate the source IP addresses permitted by ACL 2000

[AP] interface vlan-interface 1

[AP-Vlan-interface1] nat outbound 2000

[AP-Vlan-interface1] quit

Verifying the configuration

# Display client information on the AP.

[AP] display wlan client

Total number of clients: 1

 

MAC address    User name                                  R IP address      VLAN

bc6c-2213-7cb7 N/A                                        1 192.1.0.2       100

# Verify that VLAN-interface 1 has obtained an IP address through DHCP.

[AP] display dhcp client interface vlan-interface 1

Vlan-interface1 DHCP client information:

  Current state: BOUND

  Allocated IP: 2.2.2.2 255.255.255.0

  Allocated lease: 86400 seconds, T1: 36532 seconds, T2: 75600 seconds

  DHCP server: 2.2.2.1

# Ping the DHCP server at 2.2.2.1 from a client. On the AP, display NAT session information.

[AP] display nat session verbose

Initiator:

  Source      IP/port: 192.1.0.2/768

  Destination IP/port: 2.2.2.1/2048

  DS-Lite tunnel peer: -

  VPN instance/VLAN ID/Inline ID: -/-/-

  Protocol: ICMP(1)

  Inbound interface: Vlan-interface100

Responder:

  Source      IP/port: 2.2.2.1/1

  Destination IP/port: 2.2.2.2/0

  DS-Lite tunnel peer: -

  VPN instance/VLAN ID/Inline ID: -/-/-

  Protocol: ICMP(1)

  Inbound interface: Vlan-interface1

State: ICMP_REPLY

Application: ICMP

Rule ID: -/-/-

Rule name:

Start time: 2016-01-01 05:27:35  TTL: 7s

Initiator->Responder:            0 packets          0 bytes

Responder->Initiator:            0 packets          0 bytes

Total sessions found: 1

Configuration files

#

 dhcp enable

#

vlan 1

#

vlan 100

#

dhcp server ip-pool 100

 gateway-list 192.1.0.1

 network 192.1.0.0 mask 255.255.255.0

#

wlan service-template service

 ssid service

 vlan 100

 akm mode psk

 preshared-key pass-phrase cipher $c$3$7hZ2DNiI+h/ajPE7DhZbD6Y7py9vqf4721sp

 cipher-suite ccmp

 security-ie rsn

 service-template enable

#

interface Vlan-interface1

 ip address dhcp-alloc

 nat outbound 2000

#

interface Vlan-interface100

 ip address 192.1.0.1 255.255.255.0

#

interface WLAN-Radio1/0/1

 service-template service

#

acl basic 2000

 rule 0 permit source 192.1.0.0 0.0.0.255

#

return

Related documentation

·     Network Connectivity Command Reference in H3C Access Points Command References

·     Network Connectivity Configuration Guide in H3C Access Points Configuration Guides

·     WLAN Access Command Reference in H3C Access Points Command References

·     WLAN Access Configuration Guide in H3C Access Points Configuration Guides