I've installed UFW (Uncomplicated Firewall) from the EPEL repo. When I try to allow connections to a non-default SSH port using
ufw allow 22022/tcp, it fails with:
ERROR: problem running
The same error occurs with deny on an arbitrary port.
When I try to change the logging settings using
ufw logging off, I get:
ERROR: Could not update running firewall
But UFW is not running (I triple checked it with
ufw status and
systemctl status ufw and
ps aux | grep ufw). Any ideas how this problem can be solved?