We have a VPN between a PIX 515 and a PIX 506. From the inside network of PIX 506 we can ping the inside interface of PIX 515 and other hosts on the inisde network of PIX 515.
From the inside network of PIX 515 we can ping inside hosts of the PIX 506 but not the inside interface of PIX 506. The inside interface of 506 can be pinged from the PIX 506 itself and from the inside network.
The strange thing is that the ping gets through the tunnel to the 506 and the 506 sends then an ARP request out its interface (ARP request sent from 10.0.15.1 looking for MAC address of 10.0.15.1 ???). When we make a static and permanent ARP entry in the 506 config, then the 506 sends an echo request out it's inside interface.
We already tested it with an other PIX 501 and an other release (6.2.2 instead of 6.3.3) with the same result ... any ideas?
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...