Cisco 7604 Configuration Guide - Page 505
Skinny (SCCP) Inspection, SCCP Inspection Overview
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Chapter 22 Applying Application Layer Protocol Inspection Skinny (SCCP) Inspection Network Processor 1 connections UDP out 209.165.201.100:5060 in 209.165.201.118:5060 idle 0:00:21 Bytes 67358 FLAGS - T UDP out 10.3.100.115:16384 in 209.165.201.118:16384 idle 0:00:00 Bytes 6042324 FLAGS - m UDP out 209.165.201.100:0 in 209.165.201.118:5060 idle 0:00:21 Bytes 18 FLAGS - t Network Processor 2 connections UDP out 209.165.201.100:5060 in 209.165.201.115:5060 idle 0:00:25 Bytes 80181 FLAGS - T UDP out 10.3.100.118:16384 in 209.165.201.115:16384 idle 0:00:00 Bytes 6047556 FLAGS - m UDP out 209.165.201.100:0 in 209.165.201.115:5060 idle 0:00:25 Bytes 33 FLAGS - t Multicast sessions: Network Processor 1 connections Network Processor 2 connections IPv6 connections: hostname(config)# show xlate 2 in use, 2 most used Global 30.100.100.115 Local 209.165.201.115 Global 30.100.100.118 Local 209.165.201.118 Skinny (SCCP) Inspection This section describes how to enable SCCP application inspection and change the default port configuration. This section includes the following topics: • SCCP Inspection Overview, page 22-89 • Supporting Cisco IP Phones, page 22-90 • Restrictions and Limitations, page 22-90 • Configuring and Enabling SCCP Inspection, page 22-90 • Verifying and Monitoring SCCP Inspection, page 22-92 • SCCP (Skinny) Sample Configuration, page 22-93 SCCP Inspection Overview Skinny (SCCP) is a simplified protocol used in VoIP networks. Cisco IP Phones using SCCP can coexist in an H.323 environment. When used with Cisco CallManager, the SCCP client can interoperate with H.323 compliant terminals. The FWSM supports all versions through Version 17 including: • Registrations of SCCP version 17 phones. • SCCP version 17 media related messages for opening up pinholes for video/audio streams. The following actions are not supported: • Registrations of endpoints that have IPv6 addresses. The Register messages are dropped and a debug message is generated. • If IPv6 messages are embedded in the SCCP messages, they are not NATed or PATed; they are left untranslated. The FWSM supports PAT and NAT for SCCP. PAT is necessary if you have more IP phones than global IP addresses for the IP phones to use. By supporting NAT and PAT of SCCP Signaling packets, Skinny application inspection ensures that all SCCP signalling and media packets can traverse the FWSM. OL-20748-01 Catalyst 6500 Series Switch and Cisco 7600 Series Router Firewall Services Module Configuration Guide using ASDM 22-89
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