Integrating site protection with Coppermine

[CliffDillard]

Most of the integration topics I see here are about change management tools and forums.  My interest is in integration a password tool such as SiteLok with other packages.   The objective is to protect the entire site.   Anyone tries to access any page without going through the login, they are taken to the login screen.  Once signed into the site there is no further need to sign on to forums like phpBB or galleries like Coppermine.  Is this doable?   Suggestions?  Sample sites?
Thanks

[Nibbler]

It's possible, just a matter of writing the code to make it happen.