hi, i have solved it with a "complex but working" solution. i am running a proxy at home behind stunnel ( certificates and whitelist) , i am using stunnel to camoflough the proxy trafiic to look like any ssl traffic and even use standard SSL port ( POP3S - 993 , SMTPS-465 , HTTPS-443). those ports are usually open on enterprised networks. i am running proxifier on my work computer, which connects via a proxy server at home. obviously it is running on tcp only what its working. i am trying to skip the proxy use, and stick with stunnel only but i havent sorted how to force btsync to use only tcp on linux. Eldadh