Is it possible to log outgoing url with it's query string and...

I have a dedicated server, UNIX, and I am trying to do some basic logging.

When visitors visit a website, I understand that the basic server puts OUT the HTML command.

When it is a cgi program, either Perl, PHP or other, it can run commands. But on standard, usually there are not outgoing url's ran, so...

Here is my question:
Can I make the server log outgoing requests by such programs, the strings(url + query string), and the response from such an outgoing request?

I just want to know if it is possible. Usually, from what I undestand, these are done on port 80. So, would not just logging all outgoing requests on Port 80 do it? Again, can that be done?


Thank you,
Richard

hit it at the firewall. have the firewall log everything and parse it periodically for port 80 stuff.