no filter url http|except [local_ip local_mask foreign_ip foreign_mask]
url Filter URLs (Universal Resource Locators) from data moving through the PIX Firewall.
http Filter HTTP (World Wide Web) URLs.
except Create an exception to a previous filter condition.
local_ip The IP address of the highest security level interface from which access is sought. You can set this address to 0.0.0.0 (or in shortened form, 0) to specify all hosts.
local_mask Network mask of local_ip. You can use 0.0.0.0 (or in shortened form, 0) to specify all hosts.
foreign_ip The IP address of the lowest security level interface to which access is sought. You can use 0.0.0.0 (or in shortened form, 0) to specify all hosts.
foreign_mask Network mask of foreign_ip. Always specify a specific mask value. You can use 0.0.0.0 (or in shortened form, 0) to specify all hosts.
allow When the server is unavailable, let outbound connections pass through PIX Firewall without filtering. If you omit this option, and if the WebSENSE server goes offline, PIX Firewall stops outbound port 80 (Web) traffic until the WebSENSE server is back online.
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...