I have now resolved this. - Thought I had the protocol rule in place - but didn't. Thanks > Hi all, > > I have just performed a basic installation of ISA with SP1 on a multihomed > machine within our network. > > I can configure Packet filters to allow/deny certain ports and this all > works fine. - Which would suggest that there is no issue with the routing > or the IP configuration. > > However, for some reason, I cannot get anything using the Web Proxy to > work and its starting to get a tad frustrating! - The ISA server has the > default Allow rule for all Site and Content access and is using the > default port of 8080 for all outgoing web requests, however everytime I > attempt to access a site from the IE, using the appropriate Proxy settings > I get an ISA error showing the following: > > ******************************* > HTTP Proxy Error - The ISA Server denies the specified Uniform Resource > Locator (URL). (12202). > > Technical Information: > Background: > The gateway could not retrieve the requested page. > ******************************* > > If anyone can shed any light on this it would be very much appreciated. > > Cheers, > Mark