ASA and PIX alone have limited Intrusion detection or prevention capabilities. Therefore, PIX is limited in these types of intrusion prevention. As in ASA you can install the AIP module which as Intrusion Prevention system and can easily identify most signatures and take actions according to your configuration.
Below you can find a link to configure Intrusion Detection on PIX 6.3 :
Hi, Thanks for reply and TCP normalization is quiet helpful.
I am looking for advanced techniques in PIX/ASA which can help in preventing these attacks; I know that PIX/ASA really isn?t much on intrusion detection side, but few configuration parameters which can harden security to minimize risk keeping IDS part aside.
Example ? ?no ip directed-broadcast? command in router can help to prevent smurf attack.
Similarly ?ip verify reverse-path? in PIX can help preventing spoofing.
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...