Requirement : To analyse the RTP packets in voice traffic on Firewall.
Problem: I have cisco 5550 firewall. I am mirroing Inside interface traffic on one switch and capturing RTP and singaling traffic. Here on Inside interface I can capture RTP traffic through Wireshark.
But when i capture the same traffic for Outside interface of same firewall on same switch, RTP packets are not visible. Only singaling packets are visible..
Its not like that RTP packets are getting dropped on firewall, bcz my voice call are UP and running fine. But while analysing the RTP traffic on Outside interface, it not getting captured on wireshark.
Table of ContentsIntroductionVersion HistoryPossible Future
UpdatesDocuments PurposeNAT Operation in ASA 8.3+ SectionsRule Types
Network Object NATTwice NAT / Manual NATRule Types used per SectionNAT
Types used with Twice NAT / Manual NAT and Network Obje...
Table of Contents Introduction:This document describes details on how
NAT-T works. Background: ESP encrypts all critical information,
encapsulating the entire inner TCP/UDP datagram within an ESP header.
ESP is an IP protocol in the same sense that TCP an...