Block IP with iptables

December 4, 2014 The Geek Decoder No Comments Administration, Iptables

Block Incoming Request From IP 1.2.3.4

The following command will drop any packet coming from the IP address 1.2.3.4:


# /sbin/iptables -I INPUT -s {IP-HERE} -j DROP
# /sbin/iptables -I INPUT -s 1.2.3.4 -j DROP

Finally, the last thing we need to do is save our rules so that next time we reboot our computer our rules are automatically reloaded:


# /sbin/service iptables save

Check to see if it is added:

# iptables --list -n | grep 37.233.38.46
DROP       all  --  37.233.38.46         0.0.0.0/0

Other good info to check out:

GEEKDECODER