Gaming on openSUSE - Steam with Proxy Connection - Desura Package Missing

I’m not able to run steam as it says that it can’t access net connection. Everytime this happens the only thing comes to my mind is proxy connection.

I googled and found that some forums say steam doesn’t allows proxy connection.
So, guys in valve (steam) don’t want any college student play games. lol!

Is this claim true? Is their any wayaround?

Also Desura package is missing from