I want to provide some security by obscurity. I don't like telling the world that I am "unbreakable" (anti-Ellison jab intended). If the ICMP filter can reject anything, why can't the web filter? Is there a way to change the 12202 message? -origmsg- Re: Return Nothing from Web Publishing?It doesn't work like that. ISA plays "by the rules" (RFC). If a connection is attempted to its web = services, it's bound to respond negatively when appropriate. You can't tell ISA to just "play dumb" in this case. What's wrong with letting them know you have ISA protecting you? If = it's properly configured, they can't touch you anyway.