There is an issue with remote vpn. It works perfectly fine but fails intermittently (sometimes after a day or two). Thinking that it may be a bug, i upgraded to 4.7 code but the same issue persists but probably less often.
But after i restart the concentrator, it works perfectly fine.
The following is the snippet of the filterable event log during the failure:
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...