Add example for port forwarding

[egeexyz]

The examples in the readme are quite good, however there is not an example that features Port Forwarding.

It would be great for folks looking for a comprehensive ufw role that supports port forwarding to see one in the examples because it is not clear from the readme if this role supports it.

[tersmitten]

I have no idea too, do you have a terminal (or generic ansible) example?

[oneslash]

I have managed to do it with

- name: insert port forwarding for ufw
  lineinfile:
    dest: /etc/ufw/before.rules
    line: "{{ item }}"
  with_items:
    - '*nat'
    - ':POSTROUTING ACCEPT [0:0]'
    - "-A POSTROUTING -s {{  }} -o ens5 -j MASQUERADE \nCOMMIT"

[tersmitten]

I think it would be better to template /etc/ufw/before.rules. See https://github.com/Oefenweb/ansible-dnsmasq/blob/master/templates/etc/default/dnsmasq.j2 for instance

[tersmitten]

But there're probably more files that (might) need templating:

-rw-r-----   1 root root  915 jul 19  2017 after6.rules
-rw-r-----   1 root root 1,1K jul 19  2016 after.init
-rw-r-----   1 root root 1004 jul 19  2017 after.rules
drwxr-xr-x   2 root root 4,0K dec 11 06:14 applications.d
-rw-r-----   1 root root 6,3K jul 19  2017 before6.rules
-rw-r-----   1 root root 1,2K jul 19  2016 before.init
-rw-r-----   1 root root 2,7K jul 19  2017 before.rules
-rw-r--r--   1 root root 1,9K apr 15  2016 sysctl.conf
-rw-r--r--   1 root root  313 mrt 26  2018 ufw.conf
-rw-r-----   1 root root 1,6K jul  6  2018 user6.rules
-rw-r-----   1 root root 1,6K jul  6  2018 user.rules

[tersmitten]

See #21