I'm looking to implement an IPSEC VPN on my 2621 Cisco router (if possible) which is running Cisco IOS 12.2(13)T1. My first questions is whether this IOS version is sufficient for me to implement an IPSEC VPN on this router. This router also has NAT enabled on one of it's Fast Ethernet interface which hosts the internal private network. Is there any documentation on Cisco on elsewhere that I can refer to in order to setup this VPN implementation ? Once this is setup, can the VPN be access by any VPN client software or does it need to be a Cisco VPN client software specifically ?
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...