Nortel Networks WEB OS 212777 - Manual (Page 418)

Web OS 10.0 Application Guide
418 n Chapter 15: Content Intelligent Switching
212777-A, February 2002
Configuring a Layer 7 Deny Filter
1. Before you can configure Layer 7 deny filter, ensure that the switch has already been con-
figured for basic switch functions:
n
Assign an IP address to each of the real servers in the server pool.
n
Define an IP interface on the switch.
For information on how to configure your network for the above tasks, see Chapter 6, “Server
Load Balancing .”
2. Define the virus string patterns or offending HTTP URL request to be blocked.
3. Apply and save the configuration.
4. Identify the IDs of the defined strings.
Number of entries: four
5. Select the filter and enable the filter action to deny.
6. Enable URL parsing.
>> # /cfg/slb/layer7/slb/add ida (Define the code red virus string)
>> Server Loadbalance resource# add %c1%9c (Define the code blue virus string)
>> Server Loadbalance resource# add %c0%af (Define the code blue virus string)
>> Server Loadbalance resource# add playdog.com (Define the offending URL
request)
>> Server Loadbalance resource# cur
ID SLB String
1 ida
2 %c1%9c
3 %c0%af
4 playdog.com
>> # /cfg/slb/filt 1 (Select the filter)
>> Filter 1 # action deny (Set the filter action to deny)
>> Filter 1 # adv
>> Filter 1 Advanced# urlp ena (Enable URL parsing)