I have Cisco IPS 4240 deployed in the infrastructure.
I have GRE over IPSec Tunnels accross many locations.I want to know if IPS can check for GRE Payload in case of packets flowing accross GRE over IPSec Tunnel. ( e.g. can I use signature id1401/0- IPIP Encapsulation )
Problem faced: user laptop was infected and it was locking the account of another user in another location to whom he used to communicate on GRE over IPSec Tunnel.
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...