We have added shuns for many spam email servers to help reduce the amount of spam that gets into our smtp server. The problem is that when the PIX is power cycled it looses all of the shunned IP addresses. Is there a way to keep them in the PIX after a power cycle?
The shun command was designed to allow external IDS to stop attacks at the fw, so they never end in the configuration. You need to use access-list.
BTW, it would be much easier to maintain a list of forbidden addresses if you had a 6.2 or later version, as they allow you to create an object group with all the undesired IP addresses and block them all with only an entry on the ACL.
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...