| Command | Description |
|---|---|
sudo iptables -L |
Lists all the current rules |
sudo iptables -F |
Clears all the current rules |
sudo /sbin/iptables-save |
Saves changes to the iptables on Ubuntu systems |
sudo iptables -A INPUT -j DROP |
Drops all incoming traffic |
sudo iptables -A INPUT -s 192.168.0.254 -j DROP |
Blocks all connections associated with the IP address of 192.168.0.254 |
iptables