Cisco ASA Series User Manual

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Cisco ASA Series CLI Configuration Guide
Chapter 1 Configuring Inspection for Voice and Video Protocols
SIP Inspection
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 1-4.
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 restrict usage on reserve port for media negotiation, enter the following command:
hostname(config-pmap-p)# reserve-port-protect
c. To set the limit on the URL length allowed in the message, enter the following command:
hostname(config-pmap-p)# url-length-limit length
Where the length argument specifies the URL length in bytes (0 to 6000).
The following example shows a how to define an RTSP inspection policy map.
hostname(config)# regex badurl1 www.url1.com/rtsp.avi
hostname(config)# regex badurl2 www.url2.com/rtsp.rm
hostname(config)# regex badurl3 www.url3.com/rtsp.asp
hostname(config)# class-map type regex match-any badurl-list
hostname(config-cmap)# match regex badurl1
hostname(config-cmap)# match regex badurl2
hostname(config-cmap)# match regex badurl3
hostname(config)# policy-map type inspect rtsp rtsp-filter-map
hostname(config-pmap)# match url-filter regex class badurl-list
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
SIP Inspection
This section describes SIP application inspection. This section includes the following topics:
• SIP Inspection Overview, page 1-19
• SIP Instant Messaging, page 1-19
• Configuring a SIP Inspection Policy Map for Additional Inspection Control, page 1-20
• Configuring SIP Timeout Values, page 1-24

Cisco ASA Series Specifications

General

Brand	Cisco
Model	ASA Series
Category	Network Hardware
Language	English