Do you use the PIX for point-to-point VPN between sites?
Do you use the PIX as a VPN concentrator for end users?
Do you have a DMZ or multiple DMZs?
Has anything recently changed in your network that would have increased traffic through your PIX?
I mention these things because they all require CPU resources and memory.
The easiest way to free up memory is to reboot the PIX. Of course, this is not always an option but the results are very predictable. If after the reboot the memory usage goes right back up to previous levels then it's time to do a traffic study of your network and determine if this PIX has the horsepower you require or if some other network re-design is in order.
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...