Nowadays, there are a lot of companies that offer a firewall service and one of them is CentOS 7. A firewall is a software application that monitors incoming and outgoing data traffic on a computer system.
The firewall allows only specific types of data to pass through it, such as email messages, web pages, file transfers, etc.
Introducing The Firewall Service On CentOS 7?
The Firewall service on CentOS 7 is a complete firewall solution for the servers, which is available as free software. A firewall is a network security system that protects your system from unauthorized access.
That is, it controls the incoming and outgoing data packets through your server. It works by analyzing the incoming and outgoing traffic to see if it falls into any of the set rules or not.
The rules that are set by the firewall are called ‘Access Control Lists (ACLs). The CentOS 7 firewall service allows you to:
- Block all the incoming traffic apart from certain ports
- Block all the outgoing traffic apart from certain ports
- Allow specific network packets to pass through it
Installation Of The Firewall Service?
Now, let’s learn how to install and configure the firewall service. The firewall service on CentOS 7 can be installed by using one of these two methods:
- 1) Using YUM
- 2) Using DNF
Install And Configure The Firewall Service
1) Using YUM To install a firewall on your CentOS 7 system, follow these steps:
Open the terminal option on your server. Run this command in the terminal:
- sudo yum install Firewalld -y
Now, the Firewalld service will be installed on your server.
Next step is to configure it using this command:
- sudo firewall-cmd –add-service=http –permanent
After successfully installing and configuring Firewall on your server you can check its status as follows:
- sudo firewall-cmd –state
2) Using DNF To install a firewall on your CentOS 7 system, follow these steps:
- sudo yum remove Iptables* -y
Run this command in the terminal:
- sudo DNF install firewall -y
Now, the firewall service will be installed on your server.
Next step is to configure it using this command:
- sudo firewall-cmd –add-service=http –permanent
After successfully installing and configuring the firewall on your server you can check its status as follows:
- sudo firewall-cmd –state
What Advantage Does Firewall Service Give To The Industry?
The Firewall service on CentOS 7 is a complete firewall solution for the servers. It is available as free software.
A firewall is a network security system that protects your system from unauthorized access. That is, it controls the incoming and outgoing data packets through your server.
It works by analyzing the incoming and outgoing traffic to see if it falls into any of the set rules or not. The rules that are set by the firewall are called ‘Access Control Lists (ACLs).
Conclusion:
We can conclude that the Firewall service on CentOS 7 is one of the best firewall services that you can get to protect your servers.