The IPTables program that comes with Linux distributions allows administrators to configure the operating system so that it allows applications and clients to connect through the network and stop unwanted applications and clients from communicating and corrupting the operating system.It is really a front end tool to manage netfilters which is integrated with the linux kernel. Iptables functions primarily at OSI layer 3(Network layer) & layer 4(Transport layer).And it can also manage ICMP To start, stop, and restart iptables after [...]
