That says to get a new account for linux. I don't think that's a reasonable solution. Surely there must be a way to get the current connection working under linux.
Maybe the new username funda is just a simple branch on their end.
if( linux_user() ) { some_generic_auth(); } else { proprietary_auth(); }
It's just a hunch though. Even the Sify auth procedure is similar.
Siddhesh