Minimal UFW Setup
UFW (Uncomplicated Firewall) is a firewall software package that is easy to use initially and yet flexible enough for power users.
...
There is much more to UFW but the above steps should get you going.
More UFW Commands
Here are some more useful ufw commands,
Code Block | ||
---|---|---|
| ||
sudo ufw deny 443 # Disables and leave the entry in the status. Useful for a port you leave on and off sometimes. sudo ufw delete allow port 443 # Actually delete the firewall rule entry. Note you must have it enabled to delete it. |
Article Improvements
Warning |
---|
This article can be improved in the following areas. |
...
Do you really need to enable the port to delete it? That was the only way the command worked for us, but then again we might have to use a different syntax for deleting a disabled port.
References
https://help.ubuntu.com/9.10/serverguide/C/firewall.html - official docs from Ubuntu.