Cisco 837 - VPN only connects if PC is turned on on LAN
We have an Cisco 837 ADSL router that connects to our Cisco Concentrator. The only way I can get the tunnel up is if a user turns there PC on that is plugged into the ethernet port on the back of the 837. If it's off and the router is rebooted the tunnel stays down. Why does it need a PC to bring the tunnel up?
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...