Cisco Systems EDCS-154011 manual An IP/VC Application Note

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Integrating Cisco Secure PIX Firewall and IP/VC

Videoconferencing Networks

An IP/VC Application Note

Jonathan Roberts

Network Consultant Engineer

Enterprise Voice, Video Business Unit

September 24, 2001

EDCS-154011

Copyright © 2001 Cisco Systems, Inc.

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Contents An IP/VC Application Note Table of contents Introduction What is the Cisco Secure PIX Firewall? Issues with Firewalls and H.323Implementing NAT for use with in-bound H.323 traffic What is NAT?Two Interface PIX with NAT Diagram Configuration Description Static command Breaking down the PIX configuration Fixup protocol CommandAccess-list command Access-group aclID in interface interfacename Access-list aclout permit tcp any hostAccess-group aclout in interface outside Helpful Links Typical Ports used for H.323 traffic