setup three areas on PIX: public; dmz; inside. Plug the vpn (I assume this is a Cisco VPN 3000..) concentrator's public interface to the dms switch (both PIX's dmz interface and vpn concentrator's public interface on the same switch), then plug the PIX inside to the inside switch, plug in the vpn inside interface to the inside switch, plug the router's eithernet interface to the inside switch. Your local lan will be on the the same segment as the inside swith. config is simple, works very well. does this help?
It depends on how many sessions you plan to terminate on the router. IOS router even with VPN accelerator card will still have lot of limitations when it comes to support large number of VPN clients. I will not replace VPN concentrator with an IOS router unless you are talking about 7100 or above routers thats design to handle VPN. Remember, IOS needs to create access-list dynamically to handle the security requests. That puts pressure on processor.
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...