Hi, I'm having the following issue: there's an application that pings a host with 5-byte pings. The PIX (7.2 software) won't forward pings unless they have at least 20 bytes of payload. I can also generate the pings with the DOS command ping x.x.x.x -l 5, which pings with 5 bytes of payload, with the same results. Any ideas?
Re: PIX drops ICMP with less than 20 bytes of payload
Both. If I ping the interface with a 20-byte ping, it works. With a 19-byte ping or smaller, it doesn't. Same thing for anything beyond the PIX. Other hosts connected to the same switch as the near-end interface of the PIX respond fine to the small pings, so I don't think it's the switch or anything before it that's dropping the pings.
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...