I am familiar with web servers. Boxes that you connect to in your LAN to get a web page. A very popular program that runs a web cache is Squid. What is new to me is that I can run Squid in my box so it serves the localhost and any programs that needs to connect to web resources. In any case, my desktop box can also function as a web server down the line if needed. In Arch, install Squid with the command # pacman -S squid. The configuration file is /etc/squid/squid.conf. The default cache directory is /var/cache/squid. The only item i really have to modify is the http_port. The default port that Squid uses is 3128. Now I want all traffic which goes through the default network interface to be redirected to Squid. This is called transparency. To configure Squid just add [intercept] in the line like so: http_port 3128 intercept. When you finish modifying the configuration file run a check with the command #squid -k check. Also, checking the logs can be very helpful. I got an ERROR: No f...