You are right. IPS is not an anti virus appliance, ie: it will not be able to clean the host which is infected by virus, however, it can help to prevent the spread of network virus. IPS can detect that there is anomaly of the traffic from normal traffic pattern, and will be able to detect and prevent the outbreak of the virus.
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...