Internet access monitoring and control using PIX515E
I have a PIX515E (running OS 7.2x) and I need to use it to block specific URLs and IM for most users since they abuse internet access. Some of the top execs should be allowed to access all sites without restrictions. I currently have a "inspect http" rule configured on the firewall and I'm logging all connections. Unfortunately the " Accessed URL" messages in the logs only display the sites' IP address and not the host names requested by the users so it's hard to tell what website they're really visiting (many of them don't have reverse DNS - especially if one IP address is used to host mulitple websties). Is there a way to display the host names? I have "dns domain-lookup" configured/enabled on the firewall. What would you recommend?
This can be a starter for you, but i would highly recommend you to buy a third party URL filtering software like websense.. This can not only block URLs, but give you a lot of good reports, on top users accessing http, people who have visited blocked sites etc, with EASE in configuration.. With Normal ASA CLI, it might take a nightmare to block a single URL !! with websense its just a touch n go !!!
Infact with ASA u have the CSC module which can do most of the things that websense does... but unfortunately u dont have a ASA, only a PIX, and hence this option is not valid !
Hope this helps.. all the best. rate replies if found useful..
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...