I'm trying to build site to site vpn using two 5520s. Two ASAs are sitting behind edge Cisco routers. To allow ASAs have site to site VPN, what port do I have to allow on the router to pass VPN traffic? I have to allow remote FW IP to connect to local FW IP. Port 50,51 and 500?
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...