Security

What a VPN actually does VPN stands for virtual private network, and the idea is right there in the name. It builds a private, encrypted tunnel across a network you do not control, usually the public internet, so that two points can talk as though they were sitting on the same protected local network. Anything … Read more

What it actually does A firewall sits at the boundary between two networks, usually between yours and the internet, and decides what is allowed to cross. Every piece of traffic trying to get in or out is checked against a set of rules, and anything that does not match is dropped. A sensible firewall runs on a … Read more