14-21
Cisco ASA Series Firewall CLI Configuration Guide
Chapter 14 Inspection for Voice and Video Protocols
RTSP Inspection
hostname(config-pmap-p)# drop-connection
hostname(config)# class-map rtsp-traffic-class
hostname(config-cmap)# match default-inspection-traffic
hostname(config)# policy-map rtsp-traffic-policy
hostname(config-pmap)# class rtsp-traffic-class
hostname(config-pmap-c)# inspect rtsp rtsp-filter-map
hostname(config)# service-policy rtsp-traffic-policy global
Configure the RTSP Inspection Service Policy
The default ASA configuration includes RTSP inspection on the default port applied globally on all
interfaces. A common method for customizing the inspection configuration is to customize the default
global policy. You can alternatively create a new service policy as desired, for example, an
interface-specific policy.
Procedure
Step 1 If necessary, create an L3/L4 class map to identify the traffic for which you want to apply the inspection.
class-map name
match parameter
Example:
hostname(config)# class-map rtsp_class_map
hostname(config-cmap)# match access-list rtsp
In the default global policy, the inspection_default class map is a special class map that includes default
ports for all inspection types (match default-inspection-traffic). If you are using this class map in
either the default policy or for a new service policy, you can skip this step.
For information on matching statements, see Identify Traffic (Layer 3/4 Class Maps), page 11-13.
Step 2 Add or edit a policy map that sets the actions to take with the class map traffic.
policy-map name
Example:
hostname(config)# policy-map global_policy
In the default configuration, the global_policy policy map is assigned globally to all interfaces. If you
want to edit the global_policy, enter global_policy as the policy name.
Step 3 Identify the L3/L4 class map you are using for RTSP inspection.
class name
Example:
hostname(config-pmap)# class inspection_default
To edit the default policy, or to use the special inspection_default class map in a new policy, specify
inspection_default for the name. Otherwise, you are specifying the class you created earlier in this
procedure.
Step 4 Configure RTSP inspection.
inspect rtsp [rtsp_policy_map]
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