Cisco ASA 5508-X, Configuration Manual

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14-9
Cisco ASA Series Firewall CLI Configuration Guide
Chapter 14 Inspection for Voice and Video Protocols
H.323 Inspection
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
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 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 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 H.323 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 H.323 inspection.
inspect h323 { h255 | ras } [ h323_policy_map ]
Where h323_policy_map is the optional H.323 inspection policy map. You need a map only if you want
non-default inspection processing. For information on creating the H.323 inspection policy map, see
Configure H.323 Inspection Policy Map, page 14-6 .
Example:
hostname(config-class)# no inspect h323 h225
hostname(config-class)# no inspect h323 ras