Uncomplicated Firewall (UFW) is a front-facing program for the more involved iptables firewall program installed in most GNU/Linux distributions. We can use ufw to restrict machines on the internet to only access the services (SSH, websites etc) you want them to, but it can also be used to prevent programs on the computer itself from accesing parts of the internet it shouldn't. How to Get It Log into your server by pulling up a terminal and typing:
