Reglas (Permitir / Denegar) (Allow / Deny)
Activar / Desactivar
sudo ufw enable
sudo ufw disable
Ver estado
sudo ufw status
sudo ufw status verbose
Allow by Specific IP
sudo ufw allow from
example:To allow packets from 207.46.232.182:
sudo ufw allow from 207.46.232.182
Allow by Subnet
sudo ufw allow from 192.168.1.0/24
Allow by specific port and IP address
sudo ufw allow from
example: allow IP address 192.168.0.4 access to port 22 for all protocols
sudo ufw allow from 192.168.0.4 to any port 22
Allow by specific port, IP address and protocol
sudo ufw allow from
example: allow IP address 192.168.0.4 access to port 22 using TCP
sudo ufw allow from 192.168.0.4 to any port 22 proto tcp
Deny Access
Deny by specific IP
sudo ufw deny from
example:To block packets from 207.46.232.182:
sudo ufw deny from 207.46.232.182
Deny by specific port and IP address
sudo ufw deny from
example: deny ip address 192.168.0.1 access to port 22 for all protocols
sudo ufw deny from 192.168.0.1 to any port 22
Working with numbered rules
sudo ufw status numbered
Delete numbered rule
sudo ufw delete 1
Insert numbered rule
sudo ufw insert 1 allow from
You can also allow or deny by service name since ufw reads from /etc/services
To see get a list of services:
less /etc/services
Allow by Service Name
sudo ufw allow ssh
Deny by Service Name
sudo ufw deny ssh
Conexiones SSH y SFTP
sudo ufw allow OpenSSH
Conexiones DLNA
sudo ufw allow 8200/tcp comment "dlna"