PAT all Internet source address to a specific internal address by PIX
Starting with PIX 6.2, NAT and PAT can be applied to traffic from an outside, or less secure, interface to an inside (more secure) interface. This is sometimes referred to as "bi-directional NAT."
So If all Internet outside addresses are be "bi-directional NAT" to a specific internal address, and because the PIX also used for IPSec VPN connections and VPN clients (internal local address pool), I am just wondering whether it will be impact on the IPSec VPN connections or the VPN client access functions?
Re: PAT all Internet source address to a specific internal addre
Inbound NAT shouldn't have any effect on your VPN clients or LAN-to-LAN tunnel. In fact, for the VPN traffic you would have added commands to specifically bypass the NAT functions within the PIX, so there's no problem with doing both.
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...