See also: Securing an Ubuntu Server
UFW community documentation: https://help.ubuntu.com/community/UFW
UFW server documentation: https://help.ubuntu.com/10.04/serverguide/C/firewall.html
UFW page: https://wiki.ubuntu.com/UncomplicatedFirewall
Implementing a basic firewall on your Ubuntu server is simple.
UFW (Uncomplicated Firewall) is a simple configurator for Netfilter, the packet filtering system that is built into the Linux kernel. This will then filter IP packets that [...]
