Ufw (Uncomplicated Firewall) is program for managing a netfilter
firewall. It provides a command line interface and aims to be
uncomplicated and easy to use.
Add the following code to /etc/rc.d/rc.local to start Ufw at boot time:
if [ -x /lib/ufw/ufw-init ]; then
/lib/ufw/ufw-init start
fi
Ufw comes with a number of common application profiles. Create
additional application profiles under /etc/ufw/applications.d.
Each profile should contain a list of rules which include a title,
description, and port(s) or port range.
A custom application profile should look similar to this:
[Application]
title=Application title
description=A description for the application.
ports=137,138/udp|139,445/tcp
Where xx.xx.xx.xx is the IP address of an external host, enable this
application profile by executing the following as root:
# ufw allow from xx.xx.xx.xx app Application
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