Reverse Captive portal - allow all websites except those listed $100

[fbc]

Right now the captive portal allows you to specify sites that do not require captive portal access.

I want to specify sites that are only available with captive portal access. For example, I want the captive portal site to appear only for youtube, facebook, and various other time wasters.

I sure others would appreciate that option as well.

Squidguard does not work with GATEWAY GROUPS since I'm multi-wan with load balancing.

[marcelloc]

Do you still need help on it?

[kapara]

Couldn't you just put the captive portal on a separate interface.  Create an alias for all the URL's and create a rule on the interface only allowing traffic to the alias?