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How to set up linux firewall

Linux firewall setting method: First, you need to ensure that the firewall is turned on, then add rules, save the rules, test the rules, and finally restart the firewall. If you want to know more about Linux firewalls, you can read the articles below this topic.

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How to set up linux firewall Setting steps: 1. Open the firewall: First, make sure the firewall is turned on; 2. Add rules: Use the iptables command to add rules; 3. Save rules: After adding the rules, you need to save the rules so that they can be used after the system restarts. It is still in effect; 4. Test the rules: After saving the rules, you can test whether the rules are effective; 5. Restart the firewall.

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How to check linux firewall status How to check the Linux firewall status: 1. Use the service iptables status command to check the firewall status; 2. Use the systemctl status firewalld command to check the firewall status.

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What is the linux firewall module In Linux, the firewall module refers to the information security system set up between the Internet and the corporate intranet, which monitors the transmission according to the company's predetermined policies; there are two firewalls in Linux, iptables and firewalld, and iptables is closer to the original data. operation, with greater precision, while firewalld is easier to operate.

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How to set firewall rules on Linux How to set firewall rules on Linux A firewall is an important part of protecting computer network security. It can monitor and filter network data packets and protect the system from malicious attacks. On the Linux operating system, we can use the iptables command to set firewall rules to control the flow of data packets. This article will introduce how to set up firewall rules on Linux to control input, output, and forwarded packets. Check the current firewall rules. Before starting, let’s check the existing firewall rules in the current system.

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