notes/ubuntu/ufw.md

if you dont specify a protocol it allows either tcp/udp

ports

sudo ufw allow 22
sudo ufw allow 22/tcp

ranges

sudo ufw allow 6000:6007/tcp
sudo ufw allow 6000:6007/udp

specific ip

sudo ufw allow from 203.0.113.4
sudo ufw allow from 203.0.113.4 to any port 22

enable firewall suod ufw enable

inquirey

sudo ufw status numbered pt@r710:~$ sudo ufw status numbered Status: active

    To                         Action      From
    --                         ------      ----
[ 1] 22/tcp                     ALLOW IN    Anywhere
[ 2] 5432                       ALLOW IN    Anywhere
[ 3] 5440                       ALLOW IN    Anywhere
[ 4] 10000                      ALLOW IN    Anywhere
[ 5] 443/tcp                    ALLOW IN    Anywhere
[ 6] 5433/tcp                   ALLOW IN    Anywhere
[ 7] 22/tcp (v6)                ALLOW IN    Anywhere (v6)
[ 8] 5432 (v6)                  ALLOW IN    Anywhere (v6)
[ 9] 5440 (v6)                  ALLOW IN    Anywhere (v6)
[10] 10000 (v6)                 ALLOW IN    Anywhere (v6)
[11] 443/tcp (v6)               ALLOW IN    Anywhere (v6)
[12] 5433/tcp (v6)              ALLOW IN    Anywhere (v6)