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Cisco ASA 5500 Series Configuration Guide using ASDM
OL-20339-01
Chapter 38 Configuring Inspection for Voice and Video Protocols
Skinny (SCCP) Inspection
• Security Level—Select the security level (high or low).
–
Low—Default.
Registration: Not enforced.
Maximum message ID: 0x181.
Minimum prefix length: 4
Media timeout: 00:05:00
Signaling timeout: 01:00:00.
RTP conformance: Not enforced.
–
Medium
Registration: Not enforced.
Maximum message ID: 0x141.
Minimum prefix length: 4.
Media timeout: 00:01:00.
Signaling timeout: 00:05:00.
RTP conformance: Enforced.
Limit payload to audio or video, based on the signaling exchange: No.
–
High
Registration: Enforced.
Maximum message ID: 0x141.
Minimum prefix length: 4.
Maximum prefix length: 65536.
Media timeout: 00:01:00.
Signaling timeout: 00:05:00.
RTP conformance: Enforced.
Limit payload to audio or video, based on the signaling exchange: Yes.
–
Message ID Filtering—Opens the Messaging ID Filtering dialog box for configuring message
ID filters.
–
Customize—Opens the Add/Edit SCCP (Skinny) Policy Map dialog box for additional settings.
–
Default Level—Sets the security level back to the default level of Low.
Modes
The following table shows the modes in which this feature is available:
Firewall Mode Security Context
Routed Transparent Single
Multiple
Context System
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