I have a PIX 520, running v 5.1 code. I have aprox 10k workstations on users networks behind the unit. It uses aprox 15-18m of INternet acess bandwidth. I am currently using PAT translations, along with static tunnels.
How many live IP addresses should I expect to need if I get away from using PAT and beging to use NAT instead ? Is ther a formula/calculation-- or just black magic and experience ?
I couldn't imagine each user using 100 sessions. It depeneds on what your users are doing but I would say the average user may use 25 sessions max. Web browsing users will probably average 10-20 sessions.
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...