wiki/wiki/linux/ufw.md

UFW

UFW (Uncomplicated Firewall) is a program to manage a netfilter firewall.

Block specific IPs

To block the whole traffic from a specific IP to your computer run: ufw deny from <ip> to any This will not send a reject response, so the target of the block won't know he was blocked. If you don't care if the target knows you can also run: sudo ufw reject from <ip> to any

List all rules

To show all rules you can run: ufw status or: ufw status numbered if you want to have a list of all rules with according numbers.

Remove rules

Locate the rule you want to remove by showing all rules (numbered). Then run: ufw delete <number of rule>