There are a lot of advantages that firewall service gives in RedHat 7. It is very important to secure your network from outside attacks.
That is why RedHat 7 uses a firewall service as a security tool that prevents unauthorized access to your computer or network.
What Is Firewall Service In RedHat 7?
Firewall service is a mechanism that controls incoming and outgoing traffic by using a configuration file. It is located in the /etc/sysconfig/ directory, and it is called Firewalld.
So this is an alternative to the Iptables command that you may be familiar with. It gives you more control over what traffic goes in and out with subnets, ports, and addresses.
The most important thing about the firewall service in RedHat is that it is dynamic. It allows for rules to be added, removed, or changed without having to restart the service.
So this means that you can manage your firewalls from a single location. We will show you how to install firewall service in RedHat and how to use it.
Installing Firewall Service In RedHat [Step By Step]
Here is the step by step to install the firewall service in RedHat from the following:
1. To install firewall service in RedHat, open up a terminal window by pressing Ctrl + Alt + T on your keyboard.
2. Type yum install Firewalld at the prompt and press Enter to run the command.
3. Once installed, restart your PC or laptop by typing reboot at the terminal prompt and pressing Enter.
4. Once rebooted, start using firewall service in RedHat by typing Systemctl start Firewall at the prompt, and press Enter to run the command.
5. You can also start using firewall service in RedHat for all boot services by typing Systemctl enable Firewalld at the prompt and pressing Enter to run the command
6. To set up firewall service in RedHat 7 follow these steps:
- 1) Type firewall-cmd –zone=public –add-interface=eth0 at the prompt to add eth0 interface
- 2) Type firewall-cmd –reload at the prompt to reload the firewall configuration
- 3) Type Systemctl enable Firewalld at the prompt to enable permanent use of firewall for all boot services
- To check if the connection works type ping google-public-DNS-a at the prompt and press enter
- To stop using firewall type Systemctl stop Firewalld at the prompt and press enter.
How To Use Firewall Service?
To use firewall service in RedHat 7 follow these steps:
- 1) Type firewall-cmd –list-all at the prompt to list all rules and zones
- 2) Type firewall-cmd –get-default-zone at the prompt to get default zone
- 3) Type firewall-cmd –permanent –zone=public –add-interface=eth0 at the prompt to add eth0 interface
- 4) Type firewall-cmd –reload at the prompt to reload the firewall configuration
- 5) Type Systemctl enable Firewalld at the prompt to enable permanent use of firewall for all boot services
- 6) To check if the connection works, type ping google-public-DNS-a at the prompt and press enter.
Conclusion:
To conclude, the firewall service in RedHat 7 is a very useful tool for network administrators. Those who want to manage their network more effectively.
Also, the firewall service in RedHat 7 is very easy to use and allows you to control incoming and outgoing traffic from your PC or laptop. Firewall service in RedHat 7 also provides different options to add, remove, or change rules.
Without the need to restart the service.