There are few ways and can be different on different Linux distributions. To load previously saved rules execute: iptables -restore < /etc/les To save rules, type the following command: iptables -save > /etc/les For rules to persist through a system reboot, they need to be saved. If the system is restarted before saving the iptables rule set, all rules are lost. Rules created with the iptables command are stored in memory. Simply by running following command: iptables -L You can also flush your iptables rules by using: iptables -F Similar to blocking, just use ACCEPT instead of DROP: iptables -A INPUT -s 192.168.0.4 -j ACCEPTĪnd after allowing that IP you must also restart iptables: service iptables restart How to unblock IP address using iptables? iptables -A INPUT -s 192.168.0.4 -j DROPĪfter blocking the IP address (adding it to the iptable rules) you must restart iptables calling: service iptables restart In command below replace “192.168.0.4” with correct IP address. This will block IP from accessing your server. Or run code below to disable it chkconfig iptables off To enable iptables starting on boot run chkconfig iptables on How to automatically start iptables service on Linux boot? If you get some tables with bunch of geek stuff that means that iptables are running. If the status message is “Firewall is stopped.” that means that iptables are not running and you should start it with sertvice iptables start. Simply call service status service iptables statusĪnd check the result: Firewall is stopped. How to check if iptables is currently running? It controls incoming and outgoing network.īasically just like any other Linux service: service iptables start Iptables is the current Linux firewall and routing service.
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