#Flush existing rules iptables -F # Set up default DROP rule for eth0 (Assuming eth0 is the Ethernet Port) iptables -P INPUT DROP # Allow existing connections to continue iptables -A INPUT -i eth0 -m state --state ESTABLISHED,RELATED -j ACCEPT # Accept everything from the 192.168.0.x network iptables -A INPUT -i eth0 -s 192.168.0.0/24 -j…
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How to block IP address in Linux – Using IPTables Rule
Using IPTables rules we can block a Single IP address or a block of IP Addresses. The following command (via ssh) will drop any packet coming from the IP address 1.2.3.4 : # iptables -I INPUT -s 1.2.3.4 -j DROP or you can use append # iptables -A INPUT -s 1.2.3.4 -j DROP How To Block Subnet…
Continue readingConfigServer installation IPtables problem in OpenVZ or Virtuozzo (solved!)
ConfigServer Firewall (AKA csf) is an essential security tool for Linux based server and VPS. The installation of CSF is pretty straight forward and is described here: http://configserver.com/free/csf/install.txt However, some of the iptables modules required by the csf might not be present in the server and when the perl test command ( # perl /usr/local/csf/bin/csftest.pl…
Continue readingHow to disable IPtables Firewall in Linux (Red hat/CentOS/Fedora Core)
Disable / Turn off Linux Firewall (Red hat/CentOS/Fedora Core) Type the following two commands to save the IPtables first and then to stop it (you must login as the root user): # /etc/init.d/iptables save # /etc/init.d/iptables stop Turn off firewall on boot # chkconfig iptables off Enable / Turn on Linux Firewall (Red hat/CentOS/Fedora Core)…
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