Re: Site to Site VPN: Need to open port for AVG virus software
By default all ports should be opened on your ASA when you define a vpn site to site tunnel, unless of course the command "sysopt connection permit-vpn" is off, if you do not have that off then try to gather some logs on both firewalls making sure those are capture when the update is performed we should see if the asa is blocking anything.
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...