You could: -password-protect it with .htaccess, or better yet: -make the repository only accessible via ssh, and -set up Trac or something similar if you want

You could: -password-protect it with .htaccess, or better yet: -make the repository only accessible via ssh, and -set up Trac or something similar if you want bug tracking and friendly svn browsing over http. I haven't set up either of these myself so I can't help you there, but I would be willing to bet that Google can answer your questions :)