Tutorial Category

Iptables

  1. How To Block IP Addresses Using IPtables

    The following article describes various ways to block IPs using the built-in RedHat firewall, iptables. The following command will drop all incoming connections from IP xx.xx.xx.xx: iptables -I INPUT -s xx.xx.xx.xx -j DROP To block a range, such as xx.xx.xx.* specify the CIDR block as follows: iptables -I INPUT -s xx.xx.xx.0/24 -j DROP If you wanted to later remove this entry you would replace the -I with -D as follows: ...