Additional Info in editing the error.html in the Web Proxy

Hi Everyone,
I am currently editing the error.html in the Web Proxy Server. Is it possible to do something like this?

Even if it’s not exactly like this, all I need is probably the category and local IP address of the user. I just want my users to know that their IT department can view their network information when they attempt to access blocked sites.

I’m not much of a webpage designer, are there anyone who can help me with this? And is this possible?


Regards,
Jessie Bautista