ufw.md

Blacklist by default

ufw default deny

Unblock port

ufw allow <port>/tcp

Block ip address or range

ufw deny from <rhost>

Whitelist ip address or range

ufw allow from <rhost>

Limit connections (default 6 connection per 30 seconds)

ufw limit <port>/tcp

Start firewall

ufw enable

List all rules

ufw status numbered

Delete rule

ufw delete <id>