No access to Internet from remote network over the IPSec tunnel
I wish someone poke a finger at where I made a mistake in configuring a pair of firewalls for site-to-site VPN.
The tunnel is on and traffic freely flows between two remote networks. The only thing is that one remote network (Site B) can't access Internet through the gateway device located at the other site. (Site A)
Here's the extract from the PIX at site B which doesn't have access to internet:
Re: No access to Internet from remote network over the IPSec tun
If you're using 6.x code on the PIX, this won't work, as you can't come in the same interface and leave out the same interface. With 7.x or higher, you have the option of using same-security permit intra-interface with a "nat (outside) / global (outside)" pair
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...