I have an IPS4270 appliance (IPS4270-20-K9) in IDS mode. I am getting continuous triggers on the TCP Hijack signature and the attacker is always the proxy server. with the target of various external addresses and 1 specific internal address hosting web services (ports 80 & 443).
I suggest to you please do somethings for your network security (Configure IPS in Inline mode), Attacker attack to your web server from external site. Also make sure the webserver Antivirus working properly.
Thanks for the feedback. Are you requesting that I test the IPS inline between Proxy server and external site. Or are you saying I must deploy like that permanently.
Currently our proxy server is on our Local LAN, in a Server VLAN, and we are spanning the VLAN to the IPS port to detect the complete server VLAN. So won't be able to deploy inline and might be an issue to do this just for test purposes as it will not replicate the existing and current environment.
Thanks Julian Sent from Cisco Technical Support iPad App
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...