Cisco 7604 Configuration Guide - Page 453
Enabling and Configuring GTP Inspection
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Chapter 22 Applying Application Layer Protocol Inspection GTP Inspection Table 22-4 GTP Map Configuration Commands Command permit response request-queue timeout (gtp-map) tunnel-limit Description Specifies an object group allowed to receive responses from another object group. Specifies the maximum requests allowed in the queue. Specifies the idle timeout for the GSN, PDP context, requests, signaling connections, and tunnels. Specifies the maximum number of tunnels allowed. Enabling and Configuring GTP Inspection GTP application inspection is disabled by default, so you need to complete the procedures described in this section to enable GTP inspection. Note GTP inspection requires a special license. If you enter GTP-related commands on a FWSM without the required license, the FWSM displays an error message. To enable or change GTP configuration, perform the following steps: Step 1 Step 2 Step 3 Step 4 Define an access list with ACEs that identify the ports required for GTP traffic. The standard ports are UDP ports 2123 and 3386. To create the access list, use the access-list extended command once for each ACE, as follows. hostname(config)# access-list acl-name permit {udp | tcp} any any eq port where acl-name is the name you assign to the access list and port is the GTP port that the ACE identifies. Create a class map or modify an existing class map to identify GTP traffic. Use the class-map command to do so, as follows. hostname(config)# class-map class_map_name hostname(config-cmap)# where class_map_name is the name of the traffic class. When you enter the class-map command, the CLI enters class map configuration mode. Use a match access-list command to identify GTP traffic with the access list you created in Step 1. hostname(config-cmap)# match access-list acl-name (Optional) If you want to enforce additional parameters on GTP traffic, create and configure a GTP map. For more information about GTP maps and the default values enforced if you do not specify GTP map, see "GTP Maps and Commands" section on page 22-36. To create and configure a GTP map, perform the following steps. a. Create a GTP map that will contain the additional parameters of GTP inspection. Use the gtp-map command to do so, as follows. hostname(config-cmap)# gtp-map map_name hostname(config-gtp-map)# where map_name is the name of the GTP map. The CLI enters GTP map configuration mode. OL-20748-01 Catalyst 6500 Series Switch and Cisco 7600 Series Router Firewall Services Module Configuration Guide using ASDM 22-37
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