I have a site to site VPN connection with another PIX (515E --> 506E) every day we have users who get disconnected for 30 seconds or so but it is enough to knock them right out of Citrix. This has been going on ever since we put up this tunnel. We also have users in different locations coming across the internet using the desktop VPN connection who seem to drop all the time (some claim up to 10 times a day).
At my end I have my pix config set for isakmp policy 8 lifetime 86400 and just found out today that the other end is changing the lifetime value on a regular basis. Don't they need to be the same?
Phase 2 lifetimes will be negotiated to the lower value.
So will Phase 1 lifetimes, but you have to keep in mind that the peer with the higher lifetime will not be able to initiate a tunnel to the lower lifetime peer. If the Phase 1 lifetimes are different, only the lower lifetime peer will be able to initiate the tunnel. For this reason it is VERY important to get your lifetimes the same.
Not sure if this is the cause of your problem, but make them the same first and see how you go. Do you actually see the tunnel going down and up during the day?
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...