I have running a pixfirewall 515 vers. 6.3(3). Time to time i am experiencing that my firerwall is blocking traffic and i can either ping or telnet to it. I am logging with trap informational level to a syslog server. How can I found out, what was hapning at the given time?
What you can do is try using capture command to filter out exact traffic. Make an access list with predefined source and destination. Use this access list in the capture statement which will show you exactly what is happening.
access-list test permit ip host a.b.c.d host k.l.m.n
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...