How do I create an ACL that would only allow specific sites to go through if I didn't know the IP and only know the DNS name. Say I want to allow only these two sites *.cisco.com and *.yahoo.com then block all others. Can I do that?
Oh I get your point now. Thanks for waking me up now. Even tough its not as flexible as a proper filtering solution (because since we are denying based on hostname, the user can simply open the URL by IP, open google's cache etc.):
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...