H3C Access Controllers
IPS Configuration Examples

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Contents

Introduction· 1

Prerequisites· 1

Example: Configuring IPS·· 1

Network configuration· 1

Restrictions and guidelines· 1

Procedures· 1

Configuring the AC· 1

Configuring the switch· 3

Verifying the configuration· 5

Configuration files· 5

Related documentation· 7

 

Introduction

The following information provides examples for configuring IPS.

Prerequisites

The following information applies to Comware-based access controllers and access points. Procedures and information in the examples might be slightly different depending on the software or hardware version of the access controllers and access points.

The configuration examples 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.

The following information is provided based on the assumption that you have basic knowledge of IPS.

Example: Configuring IPS

Network configuration

As shown in Figure 1, the switch acts as a DHCP server to assign IP addresses to the AP and client. The AP and AC establish CAPWAP tunnels in VLAN 100. The client accesses the wireless network in VLAN 200.

Configure the AC to use the default IPS policy for attack detection and prevention.

Figure 1 Network diagram

 

Restrictions and guidelines

Use the actual serial ID of an AP to uniquely identify that AP.

Procedures

Configuring the AC

1.     Configure interfaces on the AC:

# Create VLAN 100 and VLAN-interface 100, and assign an IP address to the VLAN interface. The AP will obtain this IP address to establish CAPWAP tunnels with the AC.

<AC> system-view

[AC] vlan 100

[AC-vlan100] quit

[AC] interface vlan-interface 100

[AC-Vlan-interface100] ip address 192.1.1.1 24

[AC-Vlan-interface100] quit

# Create VLAN 200 and VLAN-interface 200, and assign an IP address to the VLAN interface. The client will access the wireless network in this VLAN.

[AC] vlan 200

[AC-vlan200] quit

[AC] interface vlan-interface 200

[AC-Vlan-interface200] ip address 192.2.1.1 24

[AC-Vlan-interface200] quit

# Set the link type of GigabitEthernet 1/0/1 (the port connected to the switch) to trunk. Prevent traffic from VLAN 1 from passing through the port and allow traffic from VLAN 100 and VLAN 200 to pass through the port.

[AC] interface gigabitethernet 1/0/1

[AC-GigabitEthernet1/0/1] port link-type trunk

[AC-GigabitEthernet1/0/1] undo port trunk permit vlan 1

[AC-GigabitEthernet1/0/1] port trunk permit vlan 100 200

 [AC-GigabitEthernet1/0/1] quit

2.     Configure a wireless service:

# Create service template 1 and enter service template view.

[AC] wlan service-template 1

# Set the SSID to service.

[AC-wlan-st-1] ssid service

# Assign the client to VLAN 200 after it comes online.

[AC-wlan-st-1] vlan 200

# Specify the AKM mode as PSK, and configure the preshared key as 12345678 in plain text.

[AC-wlan-st-1] akm mode psk

[AC-wlan-st-1] preshared-key pass-phrase simple 12345678

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

[AC-wlan-st-1] cipher-suite ccmp

[AC-wlan-st-1] security-ie rsn

# Configure the AC to forward client data traffic. (Skip this step if the client data traffic forwarder is the AC by default.)

[AC-wlan-st-1] client forwarding-location ac

# Enable the service template.

[AC-wlan-st-1] service-template enable

[AC-wlan-st-1] quit

3.     Configure the AP:

 

NOTE: In large-scale networks, configure AP groups instead of single APs as a best practice.

 

# Create an AP named ap1 with model WA6320.

[AC] wlan ap ap1 model WA6320

# Set the serial ID to 219801A28N819CE0002T.

[AC-wlan-ap-ap1] serial-id 219801A28N819CE0002T

[AC-wlan-ap-ap1] quit

# Create AP group group1 and add AP ap1 to AP group group1.

[AC] wlan ap-group group1

[AC-wlan-ap-group-group1] ap ap1

# Bind service template 1 to radio 2 in AP group group1.

[AC-wlan-ap-group-group1] ap-model WA6320

[AC-wlan-ap-group-group1-ap-model-WA6320] radio 2

[AC-wlan-ap-group-group1-ap-model-WA6320-radio-2] service-template 1

# Enable radio 2.

[AC-wlan-ap-group-group1-ap-model-WA6320-radio-2] radio enable

[AC-wlan-ap-group-group1-ap-model-WA6320-radio-2] quit

[AC-wlan-ap-group-group1-ap-model-WA6320] quit

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

4.     Configure an IP address object group named ipsfilter and specify subnet 192.2.1.0/24 for the object group.

[AC] object-group ip address ipsfilter

[AC-obj-grp-ip-ipsfilter] network subnet 192.2.1.0 24

[AC-obj-grp-ip-ipsfilter] quit

5.     Apply the default IPS policy to a DPI application profile and activate the IPS policy settings:

# Create a DPI application profile named sec and enter its view. Apply the default IPS policy to the DPI application profile and set the policy mode to protect.

[AC] app-profile sec

[AC-app-profile-sec] ips apply policy default mode protect

[AC-app-profile-sec] quit

# Activate the IPS policy settings.

[AC] inspect activate

6.     Configure a security policy:

# Enter IPv4 security policy view.

[AC] security-policy ip

# Create a rule named ipsfilter to permit the traffic destined for IP addresses in IP address object group ipsfilter and apply DPI application profile sec to the security group.

[AC-security-policy-ip] rule name ipsfilter

[AC-security-policy-ip-10-ipsfilter] destination-ip ipsfilter

[AC-security-policy-ip-10-ipsfilter] action pass

[AC-security-policy-ip-10-ipsfilter] profile sec

[AC-security-policy-ip-10-ipsfilter] quit

# Activate rule matching acceleration.

[AC-security-policy-ip] accelerate enhanced enable

[AC-security-policy-ip] quit

Configuring the switch

1.     Configure interfaces on the switch:

# Create VLANs 100 and 200, create VLAN-interface 100 and VLAN-interface 200, and assign IP addresses to VLAN-interface 100 and VLAN-interface 200. The switch will use VLAN 100 to forward the traffic on CAPWAP tunnels between the AC and APs, and use VLAN 200 to forward client traffic.

<Switch> system-view

[Switch] vlan 100

[Switch-vlan100] quit

[Switch] interface vlan-interface 100

[Switch-Vlan-interface100] ip address 192.1.1.2 24

[Switch-Vlan-interface100] quit

[Switch] vlan 200

[Switch-vlan200] quit

[Switch] interface vlan-interface 200

[Switch-Vlan-interface200] ip address 192.2.1.2 24

[Switch-Vlan-interface200] quit

# Configure GigabitEthernet 1/0/1 that connects the switch to the AC as a trunk port.

[Switch] interface gigabitethernet 1/0/1

[Switch-GigabitEthernet1/0/1] port link-type trunk

# Remove the trunk port from VLAN 1, and assign the port to VLAN 100 and VLAN 200.

[Switch-GigabitEthernet1/0/1] undo port trunk permit vlan 1

[Switch-GigabitEthernet1/0/1] port trunk permit vlan 100 200

[Switch-GigabitEthernet1/0/1] quit

# Configure GigabitEthernet 1/0/2 that connects the switch to the AP as a trunk port, and assign the port to VLAN 100.

[Switch] interface gigabitethernet 1/0/2

[Switch-GigabitEthernet1/0/2] port link-type trunk

# Remove the trunk port from VLAN 1, and assign the port to VLAN 100.

[Switch-GigabitEthernet1/0/2] undo port trunk permit vlan 1

[Switch-GigabitEthernet1/0/2] port trunk permit vlan 100

# Specify the PVID of the trunk port as VLAN 100.

[Switch-GigabitEthernet1/0/2] port trunk pvid vlan 100

[Switch-GigabitEthernet1/0/2] quit

# Enable PoE on the trunk port.

[Switch-GigabitEthernet1/0/2] poe enable

[Switch-GigabitEthernet1/0/2] quit

2.     Configure DHCP:

# Enable DHCP.

[Switch] dhcp enable

# Create a DHCP address pool named vlan100 to assign IP addresses and other configuration parameters to clients on subnet 192.1.1.0/24.

[Switch] dhcp server ip-pool vlan100

[Switch-dhcp-pool-vlan100] network 192.1.1.0 mask 255.255.255.0

# Exclude IP addresses 192.1.1.1 and 192.1.1.2 from dynamic allocation.

[Switch-dhcp-pool-vlan100] forbidden-ip 192.1.1.1 192.1.1.2

# Specify a gateway.

[Switch-dhcp-pool-vlan100] gateway-list 192.1.1.1

[Switch-dhcp-pool-vlan100] quit

# Create a DHCP address pool named vlan200 to assign IP addresses and other configuration parameters to clients on subnet 192.2.1.0/24.

[Switch] dhcp server ip-pool vlan200

[Switch-dhcp-pool-vlan200] network 192.2.1.0 mask 255.255.255.0

# Exclude IP addresses 192.2.1.1 and 192.2.1.2 from dynamic allocation.

[Switch-dhcp-pool-vlan200] forbidden-ip 192.2.1.1 192.2.1.2

# Specify a gateway and a DNS server.

[Switch-dhcp-pool-vlan200] gateway-list 192.2.1.2

[Switch-dhcp-pool-vlan200] dns-list 192.2.1.2

[Switch-dhcp-pool-vlan200] quit

Verifying the configuration

# Verify that the AC can use the default IPS policy to detect and prevent known network attacks. (Details not shown.)

Configuration files

·     AC:

#

vlan 100

#

vlan 200

#

object-group ip address ipsfilter

 0 network subnet 192.2.1.0 255.255.255.0

#

wlan service-template 1

 ssid service

vlan 200

client forwarding-location ac

akm mode psk                                                                  

 preshared-key pass-phrase cipher $c$3$oLf6pOZ6bxrf25nodjOJKYEfnZ6g6ErccHyQ    

 cipher-suite ccmp                                                              

 security-ie rsn

service-template enable

#

interface Vlan-interface100

 ip address 192.1.1.1 255.255.255.0

#

interface Vlan-interface200

 ip address 192.2.1.1 255.255.255.0

#

interface GigabitEthernet1/0/1

 port link-type trunk

 undo port trunk permit vlan 1

 port trunk permit vlan 100 200

#

app-profile sec

 ips apply policy default mode protect

#

wlan ap-group group1

 ap ap1

 ap-model WA6320

radio 1

  radio 2

   radio enable

   service-template 1

#

wlan ap ap1 model WA6320

 serial-id 219801A28N819CE0002T

#

security-policy ip

 rule 10 name ipsfilter

  action pass

  profile sec

  destination-ip ipsfilte

·     Switch:

#

 dhcp enable

#

vlan 100

#

vlan 200

#

dhcp server ip-pool vlan100

 gateway-list 192.1.1.1

 network 192.1.1.0 mask 255.255.255.0

 forbidden-ip 192.1.1.1 192.1.1.2

#

dhcp server ip-pool vlan200

 gateway-list 192.2.1.2

 network 192.2.1.0 mask 255.255.255.0

 dns-list 192.2.1.2

 forbidden-ip 192.2.1.1 192.2.1.2

#

interface Vlan-interface100

 ip address 192.1.1.2 255.255.255.0

#

interface Vlan-interface200

 ip address 192.2.1.2 255.255.255.0

#

interface GigabitEthernet1/0/1

port link-type trunk

undo port trunk permit vlan 1

 port trunk permit vlan 100 200

#

interface GigabitEthernet1/0/2

port link-type trunk

undo port trunk permit vlan 1

 port trunk permit vlan 100

 port trunk pvid vlan 100

poe enable

#

Related documentation

·     IPS Command Reference in H3C Access Controllers Command References

·     IPS Configuration Guide in H3C Access Controllers Configuration Guides

·     Security Policy Command Reference in H3C Access Controllers Command References

·     Security Policy Configuration Guide in H3C Access Controllers Configuration Guides