SquidGuard question

[nicolasfo]

Hello,
I've setup SquidGuard on a pfSense box.
When I try to access to a denied website, I have a page with informations like client address, client group, URL, well.
But this page is available from the IP address of the interface, causing a certificate problem.
I've setup an authority-signed certificate on the box and I'd like the blocking page come from a FQDN in place of the IP of the interface.

I don't know where to configure this.

Any help ?

Thanks

Nicolas