And then it will use port 80. Skype and all messaging apps need to be blocked by the application signature. S From: isalist-bounce@xxxxxxxxxxxxx [mailto:isalist-bounce@xxxxxxxxxxxxx] On Behalf Of Innocent Angel Eng Sent: Wednesday, August 23, 2006 4:11 PM To: ISA Mailing List Subject: [isalist] Re: Blocking SKYPE open the cofiguration option in Skype, you will se hat port does the Skype works on and what protocol simply create a policy to deny access using this protocol and port :) Best Regards Mohamed Saleh Manager Office Director JAMJOOM Group Tel : + 966 2 650 0202 - 651 6663 Fax : + 966 2 650 1110 Mobile : + 966 50 2953591 P.O. Box : 14117, Jeddah 21424 E-Mail : mohamed.saleh.eng@xxxxxxxxx ----- Original Message ----- From: Shamshad Ahmad <mailto:shamshad@xxxxxxxxxxxxxx> To: isalist@xxxxxxxxxxxxx Sent: Tuesday, August 22, 2006 6:42 AM Subject: [isalist] Re: Blocking SKYPE block the application using group policies , but any smart user can rename the exe name and make it work again . in my case it works perfect Regard, Shamshad Ahmad shamshad@xxxxxxxxxxxxxx http://www.obtainmyip.com Know your IP ----- Original Message ----- From: Ergun ANIL <mailto:Ergun.anil@xxxxxxxxxx> To: isalist@xxxxxxxxxxxxx Sent: Tuesday, August 22, 2006 7:02 PM Subject: [isalist] Blocking SKYPE Hiii Everybody How Can I Blocking Skype users or connection ? I'm using ISA2004 Server for internet connection our Company If not Must i use 3rd Party tool ? Thanks for your help Best Regards Ergun ANIL IT Administrator BT Departmanı Sorumlusu