Proxy auto-configuration files are JavaScript files that automatically set a browser's proxy settings based on a server administrator's needs. Businesses may use PAC files to redirect traffic to ...

Any URL is basically an IP address that you can remember easily. In other words, every working URL on the Internet is actually an IP address. The concept of IP addresses goes beyond URLs and extends ...

One implementation I even wrote a small PHP page that generated the proxy.pac on the fly based on the source address. The really nice thing about the proxy.pac is that you can use regex rules to match ...