One of the disconcerting things about using a virtual private network (VPN) is that it can be hard to tell when it's doing ...

When we use a VPN, our original IP is hidden, and the computer uses the IP address provided by the VPN. It makes sure that when you are visiting or accessing geo-blocked websites, you are not ...

I've recently written about using bash arrays and bash regular expressions, so here's a more useful example of using them to test IP addresses for validity. To belabor the obvious: IP addresses are 32 ...