sudo ufw status --check the status
sudo ufw disable -- for disable
sudo ufw enable -- for enable
sudo ufw reload -- for rload
sudo ufw reset -- for reset
sudo ufw app list -- to check app list
sudo ufw status numbered --list all of the current rules
sudo ufw status verbose
sudo ufw default deny incoming
sudo ufw default allow outgoing
--INstall UFW
sudo apt update
sudo apt install ufw
--Allow SSH accss
sudo ufw allow ssh
or
sudo ufw allow 22/tcp
How to add More Rules
sudo ufw allow 80/tcp
sudo ufw allow 443/tcp
sudo ufw allow 25/tcp
sudo ufw allow https/tcp
--For radiusd
ufw allow 1812/tcp
ufw allow 1812/udp
ufw allow 1813/tcp
ufw allow 1813/udp
ufw allow 1521/tcp
ufw allow 1521/udp
You can allow port ranges too say, tcp and udp 4000 to 6000:
$ sudo ufw allow 4000:6000/tcp
$ sudo ufw allow 4000:6000/udp
How to reject port
$ sudo ufw reject in smtp
$ sudo ufw reject out smtp
$ sudo sudo ufw reject 1194 comment 'No more vpn traffic'
$ sudo ufw reject 23 comment 'Unencrypted port not allowed'
Wednesday, 14 May 2025
ufw in Ubntu
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