Re: Does VPN works with two Different Public IP from two Differe
If you are using the VPN client (IPsec) then answer is no it doesn't work with the both the ISP at the same time. The reason behind this is when the a VPN client connect it adds a dynamic route for the VPN pool IP pointing it towards your default gateway. So whichever ISP you are using as a default gateway you can connect the VPN client only on that interface.
Is you are using Anyconnect VPN client then no problem you can connect to any interface if any connect is enable on that interface.
If you are using site to site then please refer the link Thomas gave you.
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...