Can I use ufw to setup a port forward?

Solution 1:

Let's say you want to forward requests going to 80 to a server listening on port 8080.

Note that you will need to make sure port 8080 is allowed, otherwise ufw will block the requests that are redirected to 8080.

sudo ufw allow 8080/tcp

There are no ufw commands for setting up the port forwards, so it must be done via configuraton files. Add the lines below to /etc/ufw/before.rules, before the filter section, right at the top of the file:

-A PREROUTING -p tcp --dport 80 -j REDIRECT --to-port 8080

Then restart and enable ufw to start on boot:

sudo ufw enable

Solution 2:

Since ufw 0.34 ufw supports forward rules.

example: sudo ufw route allow in on eth0 out on eth1 to port 8080 from port 80

You also need to make sure you have the sysctl net.ipv4.ip_forward enabled. For most distributions, that's done by editing /etc/sysctl.conf and running sysctl -p or rebooting.

ufw doesn't support NAT through it's easy interface, though.