Hi Chris,
thank you for yuor feedback. With Squid you can change the blocked sites with custom HTML pages or images. These images/html should be already published from a web server (it can be also the same Rasberry PI by installing Apache (see the Apache part of this tutorial) or from a remote server.
You can integrate it in your squid.conf file by using the deny_info directive. More info about this can be found in the Squid docs.

For example, your configuration line can be similar to the following (which uses my logo published from my website):
deny_info https://peppe8o.com/wp-content/uploads/2024/03/cropped-Logo2D_512x512_2.png acl

I want a html page (/var/www/html/block.html) to be loaded instead of blocked sites, like a 404 error page.
How could I write it in squid.conf file ? In the ‘acl’ section ?

Thanks,

Chris

A good tutorial on adding authentication is available from https://gist.github.com/jackblk/fdac4c744ddf2a0533278a38888f3caf.
Still not tried, but I will in near future. Please let me know if it works

Hi Dave,
from my searches with google, it appears that transparent mode can be enbled just by setting “http_port 3128 transparent” in your squid.conf

Thank you,