Ufw

UFW - Uncomplicated firewall

Links

• Ubuntu Firewall
• UFW
• Use UFW to Manage Firewall Rules

HOWTO

Allow SSH

ufw allow from 12.3.4 to any app OpenSSH

From host to port

ufw allow from 198.51.100.0 to any port 22 proto tcp

From host to app

ufw allow from 192.168.3.4 to any app SSH

List rules

ufw status numbered

Stop logging

ufw logging off

Add allow rule with logging

ufw allow log-all from any to any port 113 proto tcp