Whenever I hear GRC.com I shudder and start loosing hair. The vision of Gibson's plump moustache brings vile, unspeakable things back to rise around the taste buds on the back of my tongue. And indeed "opening a port" (haha one more kitten/isa just died)only when requested... wouldn't that be the equivalent of leaving it open? It's akin to plugging your ears shut and opening them only when the phone rings. How will you know it is ringing and that someone attempts to communicate with you? Either I misunderstood or something here is clearly illogical. -----Message d'origine----- De : Jim Harrison [mailto:Jim@xxxxxxxxxxxx] Envoyé : 19 janvier 2006 12:09 À : [ISAserver.org Discussion List] Objet : [isalist] RE: Open Ports http://www.ISAserver.org You've been to GRC.com again, haven't you? :-P Both HTTP and FTP use the TCP protocol to get where they're going. It's a basic precept of TCP communications that you can't respond to a connection request if you don't accept them. ------------------------------------------------------- Jim Harrison MCP(NT4, W2K), A+, Network+, PCG http://isaserver.org/Jim_Harrison/ http://isatools.org Read the help / books / articles! ------------------------------------------------------- -----Original Message----- From: Tom Rogers [mailto:trogers@xxxxxxxxxxxxxxxxxx] Sent: Thursday, January 19, 2006 08:59 To: [ISAserver.org Discussion List] Subject: [isalist] Open Ports Ports 80 and 21 are open statically on my ISA 2000 SP-2 server. I publish websites through ISA and a single FTP site. How do I make these ports open dynamically - only when proper access is needed? TIA, -Tom Rogers ISA Rookie All mail to and from this domain is GFI-scanned. ------------------------------------------------------ List Archives: http://www.webelists.com/cgi/lyris.pl?enter=isalist ISA Server Newsletter: http://www.isaserver.org/pages/newsletter.asp ISA Server FAQ: http://www.isaserver.org/pages/larticle.asp?type=FAQ ------------------------------------------------------ Visit TechGenix.com for more information about our other sites: http://www.techgenix.com ------------------------------------------------------ You are currently subscribed to this ISAserver.org Discussion List as: gauthiera@xxxxxxxxxxxxxxxxx To unsubscribe visit http://www.webelists.com/cgi/lyris.pl?enter=isalist Report abuse to listadmin@xxxxxxxxxxxxx