Cisco 500 Series, Configuration Manual

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Cisco Security Appliance Command Line Configuration Guide
OL-12172-03
Chapter 25 Configuring Application Layer Protocol Inspection
H.323 Inspection
Not all options are available for each match or class command. See the CLI help or the Cisco
Security Appliance Command Reference for the exact options available.
The drop keyword drops all packets that match.
The send-protocol-error keyword sends a protocol error message.
The drop-connection keyword drops the packet and closes the connection.
The mask keyword masks out the matching portion of the packet.
The reset keyword drops the packet, closes the connection, and sends a TCP reset to the server
and/or client.
The log keyword, which you can use alone or with one of the other keywords, sends a system log
message.
The rate-limit message_rate argument limits the rate of messages.
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 21-11 .
Step 7 To configure parameters that affect the inspection engine, perform the following steps:
a.
To enter parameters configuration mode, enter the following command:
hostname(config-pmap)# parameters
hostname(config-pmap-p)#
b. To define the H.323 call duration limit, enter the following command:
hostname(config-pmap-p)# call-duration-limit time
Where time is the call duration limit in seconds. Range is from 0:0:0 ti 1163:0;0. A value of 0 means
never timeout.
c. To enforce call party number used in call setup, enter the following command:
hostname(config-pmap-p)# call-party-number
d.
To enforce H.245 tunnel blocking, enter the following command:
hostname(config-pmap-p)# h245-tunnel-block action { drop-connection | log }
e. To define an hsi group and enter hsi group configuration mode, enter the following command:
hostname(config-pmap-p)# hsi-group id
Where id is the hsi group ID. Range is from 0 to 2147483647.
To add an hsi to the hsi group, enter the following command in hsi group configuration mode:
hostname(config-h225-map-hsi-grp)# hsi ip_address
Where ip_address is the host to add. A maximum of five hosts per hsi group are allowed.
To add an endpoint to the hsi group, enter the following command in hsi group configuration
mode:
hostname(config-h225-map-hsi-grp)# endpoint ip_address if_name
Where ip_address is the endpoint to add and if_name is the interface through which the endpoint
is connected to the security appliance. A maximum of ten endpoints per hsi group are allowed.
f. To check RTP packets flowing on the pinholes for protocol conformance, enter the following
command: