Yes it is, the TAC actually works fine with http. I would take a look into the installation manual to find the possible supported protocols. As far as I know svn+ssh will not work. By the way. You setup the SVN access here but take care, the same URL will be used from the Studio to communicate directly with the SVN server. Studios update and commit directly with the SVN server and does not use the TAC as a kind of proxy. You setup the SVN access here in the TAC to avoid doing it in every studio.