Cisco ASA 5505 - Manual (Page 899)

43-23
Cisco ASA 5500 Series Configuration Guide using the CLI
Chapter 43 Configuring Inspection of Basic Internet Protocols
Instant Messaging Inspection
Where the regex regex_name argument is the regular expression you created in Step 1 . The class
regex_class_name is the regular expression class map you created in Step 2 .
g. (Optional) To match the source IP address of the IM message, enter the following command:
hostname(config-cmap)# match [not] ip-address ip_address ip_address_mask
Where the ip_address and the ip_address_mask is the IP address and netmask of the message source.
h. (Optional) To match the destination IP address of the IM message, enter the following command:
hostname(config-cmap)# match [not] peer-ip-address ip_address ip_address_mask
Where the ip_address and the ip_address_mask is the IP address and netmask of the message
destination.
i. (Optional) To match the version of the IM message, enter the following command:
hostname(config-cmap)# match [not] version regex {class class_name | regex_name}
Where the regex regex_name argument is the regular expression you created in Step 1 . The class
regex_class_name is the regular expression class map you created in Step 2 .
j. (Optional) To match the filename of the IM message, enter the following command:
hostname(config-cmap)# match [not] filename regex {class class_name | regex_name}
Where the regex regex_name argument is the regular expression you created in Step 1 . The class
regex_class_name is the regular expression class map you created in Step 2 .
Note Not supported using MSN IM protocol.
Step 4 Create an IM inspection policy map, enter the following command:
hostname(config)# policy-map type inspect im policy_map_name
hostname(config-pmap)#
Where the policy_map_name is the name of the policy map. The CLI enters policy-map configuration
mode.
Step 5 (Optional) To add a description to the policy map, enter the following command:
hostname(config-pmap)# description string
Step 6 Specify the traffic on which you want to perform actions using one of the following methods:
• Specify the IM class map that you created in Step 3 by entering the following command:
hostname(config-pmap)# class class_map_name
hostname(config-pmap-c)#
• Specify traffic directly in the policy map using one of the match commands described in Step 3 . If
you use a match not command, then any traffic that does not match the criterion in the match not
command has the action applied.
You can specify multiple class or match commands in the policy map. For information about the order
of class and match commands, see the
“Defining Actions in an Inspection Policy Map” section on
page 33-2 .
Step 7 Specify the action you want to perform on the matching traffic by entering the following command:
hostname(config-pmap-c)# {drop-connection | reset | log}