I wante to make sure I understand this correctly. If I put a Cisco IDS appliance behind my Internet router and it detect suspicious activity, it will dynamically create access-lists on the router? (7204vxr 12.x IOS)
That is correct. The sensor will telnet to the router through the command and control interface and create access-list entries based on signature action. This functionality is called shunning. Note that you have to configure signatures for action shun aswell as configure the shunning device paramaters.
The link below demonstrates this using a unix director:
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...