I have an ASA 5540 7.2(2) with AIP-SSM-20 that operates IPS 5.1(4). I see the following message in the ASDM Syslog:
"IDS requested to drop GRE packet from outside --- to inside ----"
There is no relationed event in the event viewer (Monitoring of IDM 5.1)so i can not find the reason why the IPS is dropping those packets (the sensor should only deny packet inline when it matches with Viruses Signatures).
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...