Hi all To enable voice,webcam,files transfer,chatting on yahoo and msn messenger Do the followings: I did it and its works You should not use proxy server If you use a proxy server to connect to the Internet, you will not be able to use the Web cam feature. And voice Firewall client must be installed Change the settings in yahoo preferences to use firewall with no proxy in client computer Create protocol definitions: 1-yahoo chat TCP port 5050 outbound 2-yahoo voice1 TCP port 5001 outbound 3-yahoo voice2 TCP port 5000 outbound 4-yahoo voice UDP UDP port 5000 receive send 5-yahoo web cam TCP port 5100 outbound Create a protocol rule to allow these protocols definitions Restart the firwall service Restart the computer It will work for both yahoo and msn messenger I hope this will help Best regards Hanan.Mawla (MCSE,MCT,CCNP)