Unable to PING inside interface (from the inside !)
I've got an ASA running 8.4(2)
I've setup a simple IP address on one of it's ports. I've plugged in a PC to that port. The PC has been given the IP address of the ASA as it's default gateway.
From the ASA, I can ping the PC fine.
From the PC, I can't ping the ASA.
Using the "capture" command, I can see the ICMP echo request packests come in to the ASA, but nothing leaves.
Another interesting fact, is that the ASA never populates it's ARP table with the MAC address of the PC (despite the fact that it can PING it). Also, just running a plain capture on this interface shows the ASA repeatedly issuing ARP "who-has" packets. (The capture command shows the replies coming back, but a "sh arp" shows that the entries hasn't been learnt)
Any suggestions on how to fix or troubleshoot this ?
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...
[toc:faq]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 and UDP are I...