We have PIX 501 configured with PAT for general Internet access, no ACL applied to inside interface. Sometimes some of the users cannot access services on the Internet (ports 80, 25), they can access those services on the LAN so I think the PIX is dropping the packets from particular IPs for whatever reason.
How can I see what traffic from inside to outside was blocked on the PIX and for what reason?
It sounds likely you have exceeded your license - if its a 10 user license and you have more than 10 seperate ip addresses connecting out through it, it will block any additional attempts to connect out.
As it holds this session state for a while before dropping them, it can seem quite erratic, almost random.
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...