Linux is found on a huge number of computers and servers in the world, and although it is the most secure system in the world,but that doesn't we shouldn't use other security tools to make it more secure. in this post, i will introduce you to Top 5 Firewalls on Linux.
1- iptables
Most Linux distributions are loaded by default with this program, and although it is not the most advantageous, but it is the safest. It works via the command line, for its use you will need to learn some commands, yes it is not easier to use. You can search for graphical interfaces for it if you do not like using the command line.
Iptables works in a clear and simple way. It analyzes packets and checks whether they match the rules. If it does not match the rules, it uses a default behavior.
2- Monowall
Designed and optimized for low-end computers, all you need is 16 MB of storage space, which means it's just a firewall and nothing else, meaning it does not come with a lot of features.
Monowall provides a QoS routing service for configuring and controlling traffic over the Internet. This allows the prioritization of certain connections on the account of other connections. It is a secure and fast program.
The latest version of Monowall was released in February 2015, and the development is currently discontinued, but it is available for download.
3- pfSense
This program is based on the previous program Monowall, but on the contrary, pfSense is in active development mode and is not turned off. As it is built on Monowall, it has all its features plus other new features, hardware failure, multi-WAN, and many advanced features that make this program is an excellent choice for network administrators.
pfSense is rich in advantages, but it is also more complex, which reduces its ease pf use somewhat.
4- Zentyal
It was originally used as an e-mail server, but it ended up becoming a business server, and this led to it becoming an effective firewall.
This program is built on the Ubuntu Server LTS distribution, so it can be considered an operating system, which means that you can practically do everything you do on the Ubuntu distribution, Zentyal is an integrated firewall with a huge number of options and possibilities.
5- ClearOS
It is also an operating system that is a firewall based on the CentOS distribution, and what makes it unique from the rest of the Firewalls is the interface that is carefully cared for and made as simple as possible, this wonderful simplicity does not mean that it is small in size and importance, it is actually full of features.
For novice users, ClearOS offers a simple interface for them, and for advanced users ClearOS offers any feature you want!
This was a brief overview of the most prominent firewall programs on the Linux system, in your opinion what is the program you see better? What program do you use?
Posted on Utopian.io - Rewarding Open Source Contributors