ufw

Uncomplicated Firewall management.

$ ufw

Command

allow

deny

reject

limit

delete

PortProtocol

Any

tcp

udp

Examples

# Allow SSH
ufw allow ssh

# Allow port 80/tcp
ufw allow 80/tcp

# Deny port 23
ufw deny 23

# Limit SSH (rate limit)
ufw limit ssh

# Deny from specific IP
ufw deny from 192.168.1.100

# Allow from subnet to port 22
ufw allow from 192.168.1.0/24 to any port 22

# Delete a rule
ufw delete allow 80/tcp