Learning the Basics of Iptables: A Guide for Beginners

Coding with iptables is a great way to control network traffic in Linux OS. It allows users to create rules that will drop or allow traffic to certain ports. To get a list of all the rules, the iptables command can be used. This command can be used to quickly allow or drop connectivity to certain ports.

To add a rule, the user can use the -A flag followed by the chain name, the protocol type, the source address and port, the destination address and port, and the action. For example, to allow traffic from any source address to port 80, the command would be “iptables -A INPUT -p tcp –dport 80 -j ACCEPT”. To drop traffic from any source address to port 80, the command would be “iptables -A INPUT -p tcp –dport 80 -j DROP”.

By using the iptables command, users can quickly and easily control network traffic in Linux OS. It allows users to create rules that will drop or allow traffic to certain ports. With a few simple commands, users can quickly get a list of all rules and drop or allow traffic to ports.

Source de l’article sur DZONE