Cisco ASA 5506-X Configuration Manual page 201

Chapter 8 Inspection for Voice and Video Protocols
hostname(config)# regex caller 3 "5553456789"
hostname(config)# class-map type inspect h323 match-all h323_traffic
hostname(config-pmap-c)# match called-party regex caller1
hostname(config-pmap-c)# match calling-party regex caller2
hostname(config)# policy-map type inspect h323 h323_map
hostname(config-pmap)# parameters
hostname(config-pmap-p)# class h323_traffic
hostname(config-pmap-c)# drop
Configure the H.323 Inspection Service Policy
The default ASA configuration includes H.323 H.255 and RAS inspection on the default ports 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
If necessary, create an L3/L4 class map to identify the traffic for which you want to apply the inspection.
Step 1
class-map name
match parameter
Example:
hostname(config)# class-map h323_class_map
hostname(config-cmap)# match access-list h323
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
Add or edit a policy map that sets the actions to take with the class map traffic.
Step 2
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.
Identify the L3/L4 class map you are using for H.323 inspection.
Step 3
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.
Configure H.323 inspection.
Step 4
inspect h323 {h255 | ras} [h323_policy_map]
Identify Traffic (Layer 3/4 Class Maps), page
Cisco ASA Series Firewall CLI Configuration Guide
H.323 Inspection
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