İletiblock 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 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