Firewall
Last modified: 2022-12-11
It's a network security system that monitors and controls incoming and outgoing network traffic based on predetermined security rules.
Status
ufw status
ufw status verbose
Enable/Disable the Firewall
ufw enable
ufw disable
Set Default Policies
# Allow all
ufw default ALLOW
# Deny all
ufw default DENY
Rules
-
Allow
ufw allow 22 ufw allow 22/tcp ufw allow 80 ufw allow 80/tcp # Allow the given ip address access to port 22 for all protocols ufw allow from <ip> to any port 22 -
Deny
ufw deny 22 ufw deny 22/tcp ufw deny 80 ufw deny 80/tcp