We used to have an ISA Server Url filtering package which has now expired. With funds being tight i have implemented an open source url filtering solution which runs on its own machine. All i need to do is set the default gateway for the users to the new filtering machine for this to work. My questions are i am having difficulty stopping the client stations from auto discovering the proxy service on ISA i have checked group police settings local machine settings etc. It seems that even when i uncheck the auto detect web settings box periodically IE searches for a proxy then defaults to using ISA. If possible i would also like some advice to write a logon script to change the default gateway. Many Thanks in advance.