Firewalled

A firewall is a device which polices network traffic entering or leaving a network, based upon a set of rules. Setting up these rules is an important part of keeping networks secure but also allowing out correct traffic.

In Linux you can use the built-in firewall tool calles iptables.

After the following IP tables rules are applied to the proxy on your network. Which website would your users not be able to receive packets from. The token is the top level domain for the website (ie no 'www').

# iptables -A input -s 54.239.25.192 -j DROP