Others have pointed out the LWP is client-side. I think you are talking about using LWP to create some sort of HTTP proxy. In that case there are two client-server relationships. The proxy acts as a client to the web server. The proxy acts as server to the web browser.

LWP is used to implement the part of proxy that is acting as the client to the web server.

Something else is used to implement the part of the proxy that acts as the server to the browser.

There are modules on CPAN that do all that.

You can use any proxy (a Perl script or just a standard off-the-shelf HTTP proxy like Squid or Apache+mod_proxy) to "bypass" any other proxy so long as

• the replacement proxy is located outside your firewall
• it is reachable¹
• you can configure the browser proxy settings

This, of course, has nothing to do with Perl.

1. Typically via an SSH tunnel so that your HTTP traffic can't be snooped.