Cisco CP-7911G-CH1 Administration Guide - Page 220
Control Plane Policing: Example
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How to Configure Secure Unified SRST Configuring Secure SRST for SCCP and SIP dial-peer voice 81235 pots application mgcpapp destination-pattern 81235 port 1/1/0 forward-digits all ! dial-peer voice 81234 pots application mgcpapp destination-pattern 81234 port 1/0/0 ! dial-peer voice 999100 pots application mgcpapp port 1/0/0 ! dial-peer voice 999110 pots application mgcpapp port 1/1/0 ! ! ! Enable credentials service on the gateway. credentials ip source-address 10.1.1.22 port 2445 trustpoint srstca ! ! ! Enable SRST mode. call-manager-fallback secondary-dialtone 9 transfer-system full-consult ip source-address 10.1.1.22 port 2000 max-ephones 15 max-dn 30 transfer-pattern ..... . . . Control Plane Policing: Example This section provides a configuration example for the security best practice of protecting the credentials service port using control plane policing. Control plane policing protects the gateway and maintains packet forwarding and protocol states despite a heavy traffic load. For more information on control planes, see the Control Plane Policing documentation. Router# show running-config . . . ! Allow trusted host traffic. access-list 140 deny tcp host 10.1.1.11 any eq 2445 ! Rate-limit all other traffic. access-list 140 permit tcp any any eq 2445 access-list 140 deny ip any any ! Define class-map "sccp-class." class-map match-all sccp-class match access-group 140 policy-map control-plane-policy class sccp-class police 8000 1500 1500 conform-action drop exceed-action drop 220 Cisco Unified SCCP and SIP SRST System Administrator Guide OL-13143-04
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