we are planning to replace Cisco ASA5520 which is a 2nd tier firewall with TMG 2010. Is it advisable to do so ? We have ironport Mail security Appliance on outside interface of tier 2 firewall.The 1st tier firewall inside interface and 2nd tier firewall outside interface are in same network segment.
We also like to compare advantages/disadvantages and features of TMG 2010 and cisco 5520
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...