Best free Linux firewalls of 2021

Asia's Tech News Daily

The best free Linux firewalls, to make it simple and easy to manage security on your Linux computers and networks.

© Provided by TechRadar Representational image of data security

And although Linux has a firewall built right into the kernel itself, it isn’t the most convenient to use. 

There are several graphical utilities that can help you manage it, but its protection is restricted to your Linux installation. What about the other devices in your network? 

Whether you are a home user or manage a small business, chances are you have multiple devices connected to the Internet. In addition to the computers, it’s also fairly common for establishments of all sizes to have a slew of IoT devices as well that need to be protected from the rouge elements on the Internet.

A dedicated firewall stands between the internet and sanitizes all traffic before it reaches your internal network. 

While it takes quite some skill to set one up from scratch, there are several specialized distros that will help you set up a dedicated firewall with ease.

These are the best Linux VPN providers

IPFire is a Linux-based stateful firewall distro that’s built on top of Netfilter. It began as a fork of the IPCop project, but has since been rewritten based on Linux From Scratch. IPFire can be deployed on a wide variety of hardware, including ARM devices such as the Raspberry Pi.

Owing to its minimalist nature, IPFire is more approachable compared to some of its peers. The installation process allows you to configure your network into different security segments, with each segment being colour-coded. The green segment is a safe area representing all normal clients connected to the local wired network. The red segment represents the internet. No traffic can pass from red to any other segment unless you have specifically configured it that way in the firewall. 

Besides its firewalling features, IPFire also has intrusion detection and prevention capabilities, and can also be used to offer VPN facilities. The distro can also be fleshed out using a handy set of add-ons to give it additional functionalities.

OPNSense is derived from the efforts of two mature open source projects, namely pfSense and m0n0wall. 

Instead of using Linux, OPNsense is powered by HardenedBSD, which is a security oriented fork of FreeBSD. The firewall distro is designed to serve as a firewall and routing platform and besides filtering traffic can also be used to display a captive portal, shape traffic, detect and prevent intrusions, as well as setup a Virtual Private Network (VPN), and lots more.

In its bid to respond to threats in a timely fashion, the firewall distro offers weekly security updates. One of the best features about OPNsense is that it exposes all its functionalities from inside a web-based interface, which is a pleasure to use and is available in multiple languages.

OPNsense implements a stateful firewall and enables users to group firewall rules by category, which according to its website, is a handy feature for more demanding network setups.

The firewall uses an Inline Intrusion Prevention System. This is a powerful form of deep packet inspection whereby instead of merely blocking an IP address or port, OPNsense can inspect individual data packets or connections and stop them before they reach the sender if necessary. 

pfSense describes itself as the most trusted open source firewall. The original FreeBSD-based firewall distro, pfSense shares many similarities with OPNsense. For instance, in addition to being a powerful, flexible firewalling and routing platform, it includes a long list of related features. To begin with, just like with OPNsense, you can use pfSense to deploy an intrusion prevention system as well as enable VPN access. 

Also, like all of its peers, you can manage pfSense entirely via an intuitive web interface. Unlike most of its peers though, pfSense is available as a hardware device, virtual appliance, and downloadable community edition. 

Owing to its rich history, pfSense perhaps has the most extensive documentation, and one of the biggest communities of users that posts tutorials, and videos on its official support channels as well as elsewhere on the web. The commercial hosts of the distro also offer paid training courses to help you make best use of your pfSense deployment.

ClearOS is a CentOS-based distro that’s designed as a full featured replacement to commercial server distros like Red Hat Enterprise Server or Windows Small Business Server. 

There are several editions of ClearOS including a community-supported edition that is offered as a no-cost free download. You can use the community edition of ClearOS to roll out all kinds of network services including a firewall, with content filtering and intrusion detection capabilities. 

The best thing about ClearOS is its ease of deployment. As most firewall distros are written for the stereotypical geek, it’s nice to see a refreshing change in what seems to have become the de facto standard of ‘cobble it together and think about the interface afterwards’. 

Once installed, you can administer your ClearOS-powered firewall from a web-based management interface. The administration interface is intuitive to use, and will not only help you configure and monitor your firewall, but can also be used to flesh out the distro for several other network services with a few clicks. 

To top it off, ClearOS has lots of documentation to handhold first time users through some of the most common tasks. In fact, even the interface itself has lots of useful pointers to guide you through the setup and administration process.

OpenWRT is a little bit different than most on this list, as it’s a firewall developed specifically for use in routers and networks. This means that it’s not intended for ordinary home users looking to simply install a new firewall on their machine, as much as power users, networking enthusiasts, and wireless device developers.

OpenWRT isn’t at all a new player. Not only has it been going for over 15 years but it is still very actively developed and supported, while other once popular firewall developments for distros have fallen by the wayside.

It also has a surprisingly decent GUI, and offers a number of optional packages in its repository to allow OpenWRT to be configured in a variety of ways for all kinds of uses. Despite all its flexibility, OpenWRT is still one of the least demanding distros, and is fast to run.

  • These are the best Linux training providers and online courses.
Internet Explorer Channel Network
Asia's Tech News Daily
News Related

OTHER NEWS

Human intuition and machine reasoning: AI's helping us solve giant math puzzles

Research in mathematics is a deeply imaginative and intuitive process. This might come as a surprise for those who are still recovering from high-school algebra. What does the world look ... Read more »

Tesla Under Investigation By SEC Over SolarCity Panels Defects

Tesla Inc (NASDAQ:TSLA) is facing scrutiny by the Securities and Exchange Commission (SEC) over fire risks caused by alleged SolarCity’s solar panel defects. A whistleblower complained that the firm had ... Read more »

How to install any screen protector on any camera | Sony, Canon, Nikon

Welcome back to The Ultimate Tech Hub. On today’s episode we will install a LCD Screen protector for our camera. We will install the Glass Protector from Expert Shield onto ... Read more »

Crypto exchange BitMart vows to compensate for $205 million hack

NEW YORK (BLOOMBERG) – Crypto exchange BitMart will use its own funding to compensate users affected in a security breach that saw hackers withdraw about US$150 million (S$205 million) of ... Read more »

Google Pixel phones are getting another round of feature updates

Back when Google launched the Pixel 6 and the Pixel 6 Pro, we heard about a few features that were “coming soon” – and some of those features are now ... Read more »

Activision Blizzard's Call Of Duty game testers plan walkout over job cuts

NEW YORK (BLOOMBERG) – A group of workers at an Activision Blizzard division supporting the Call Of Duty franchise plan to call out of work Monday (Dec 6) in protest ... Read more »

Forza Motorsport car list, news and rumors

Forza Motorsport is the upcoming eighth entry in Microsoft’s long-running racing game franchise and while we don’t know when it’ll release just yet we’re expecting it to be a true ... Read more »

Starfield: release date, trailers, exclusivity and everything you need to know

Starfield, the long-awaited new IP from Bethesda Game Studios, is coming to Xbox PC in 2022 and it looks set to take us on an epic sci-fi adventure. Starfield details ... Read more »

The Xbox Windows app will soon tell you how well games will play on your PC

Microsoft is testing a new feature in the Xbox App for Windows that will let you know how well a game should run on your PC. The feature is currently ... Read more »

Snag a Gravity Blanket for a massive discount during this huge holiday sale

— Recommendations are independently chosen by Reviewed’s editors. Purchases you make through our links may earn us a commission. If you’re searching for a calming gift that will offer your ... Read more »

WhatsApp is adding this new functionality to disappearing messages feature

WhatsApp is giving users more control for its disappearing messages feature. Facebook-owned WhatsApp says that users will now have the option to turn on disappearing messages automatically for all their ... Read more »

TikTok secret algorithm is a big 'Duh!'

TikTok’s powerful algorithm steering the social media activity of millions of daily users is no longer a mystery. In a new New York Times report that outlines information gleaned from ... Read more »

BioWare confirms commitment to making Dragon Age 4 ‘single-player focused'

Dragon Age 4 developer, BioWare, has confirmed that the game will be a “single-player focused experience.” The confirmation comes by way of a recent blog post celebrating Dragon Age Day, ... Read more »

Lack of Workforce Insight Is Killing Your Business

There’s no denying that the future of work is all about flexibility. As employees, we love being able to replace lengthy commutes with more focused time when working from home, ... Read more »

You can now be part of the new social network, Woonkly, which will be based on NFt and metaverses

The new social network Woonkly seeks to bring together the world of Blockchain and reality. Unlike the social networks that we already have, Woonkly is based on NFT and metaverses ... Read more »

How AI Solutions Can Improve the Travel and Hotel Booking Experience

Regardless of what Covid-19 has in store this winter, the travel industry is looking ahead to 2022 and remaining hopeful for a robust recovery. But even as travel bounces back, ... Read more »

Shop Ulta Beauty's Holiday Beauty Blitz and take 50% off makeup, hair and skincare gifts

— Recommendations are independently chosen by Reviewed’s editors. Purchases you make through our links may earn us a commission. Holiday shopping just got a festive makeover thanks to the month-long ... Read more »

Dell Precision 7560 Workstation review

Two-minute review The Dell Precision 7560 is the latest in Dell’s line of portable workstation laptops, which have a reputation for being extremely powerful, but expensive. The multi-faceted line leans ... Read more »

Why we can't charge lithium-ion EV batteries in a few minutes

Extremely fast charging of our EVs would be a dream come true, right? Just imagine rolling up to a charger and juicing up your battery within mere five minutes, or ... Read more »

The start of a new era for Microsoft Teams is here

Microsoft has rolled out an update for Teams that will change the way many people collaborate with colleagues and perform their daily tasks on the platform. The update introduces functionality ... Read more »

The Game Awards has 'four or five' things as big as the Elden Ring reveal

This year’s The Game Awards will have a handful of big reveals on the scale of the Elden Ring reveal at Summer Game Fest, according to host and producer Geoff ... Read more »

How to make a League of Legends kids can play, according to Disney Melee Mania's developers

In the two years since Apple Arcade launched, it’s collected over two hundred family-friendly games that are lighthearted takes on gameplay genres that are usually pretty intense. Its next game, ... Read more »

How to upgrade your PS4, PS4 Slim and PS4 Pro hard drive

Are you tired of deleting games from your PS4 library? Then it may be time to upgrade your hard drive. Some games – we’re looking at you, Call of Duty ... Read more »

Omicron v Delta: How do variants compare on infectiousness and effect on Covid vaccines?

A woman receives her Covid-19 booster jab (Yui Mok/PA) (PA Wire) The emergence of the new coronavirus variant Omicron has already affected travel rules and seen a return to mandatory ... Read more »

New Matrix Resurrections trailer revives the past to deliver a new puzzling future

The Matrix Resurrections has received a new trailer ahead of its release later this month – and it looks absolutely stunning, even though it leaves us with more questions than ... Read more »

There's never been a worse time to own a Roku streaming stick

If you’ve recently bought yourself one of the best Roku streaming sticks – as many of you may have, during the Black Friday and Cyber Monday sales – then you ... Read more »

Donald Trump's new site wants to take on AWS as well as Facebook

The social media firm founded by former US President Donald Trump is looking to shake up large areas of the technology sector, it has claimed. As reported by the BBC, ... Read more »

F1 racer Daniel Ricciardo blasted over ‘ignorant' comments on anti-LGBT+ Saudi Arabia

Formula One racer Daniel Ricciardo has been criticised after admitting his “ignorance” amid backlash over Saudi Arabia’s LGBT+ and human rights record. Saudi Arabia hosted its first-ever Grand Prix on ... Read more »

Fortnite Chapter 3 adds a new map and Spider-Man content

Fortnite has received some major content with Chapter 3 – after a pretty spectacular chapter 2 finale – that brings a whole new map to the popular battle royale game. ... Read more »

Enloop review

Business planning tools come in various forms, and they’re typically recommended for both beginners and experienced entrepreneurs alike nowadays. If you’ve never used one before, it can take a while ... Read more »

Halo Infinite is thankfully getting more multiplayer modes before 2022

Even though Halo Infinite’s campaign lands on December 8 for Xbox Series X/S and PC, it looks like it won’t be the only piece of content keeping Halo fans occupied ... Read more »

Names.co.uk review

Formed in 1997, Names.co.uk (also known as Namesco) has long been one of the top domain registrars in the UK. However, it also offers a whole variety of web hosting ... Read more »

Massive Amazon deals: Echo, Fire tablets, Kindle, Blink Mini, Fire TV stick, more

If you missed out on Black Friday, fear not. Amazon is offering massive deals right now on its best-selling devices, including the Echo Dot, Fire tablets, Kindle, Blink security cameras, ... Read more »

Could we store carbon in pools of brine underneath the seabed?

Ecological catastrophy It’s one of the more ambitious ideas in terms of dealing with carbon dioxide – burying it in pools of salty water beneath the seabed. Such an idea ... Read more »

The UK's policing bill will make climate activism almost illegal – just when it's most needed

The UK government has proposed some worrying amendments to its already draconian policing bill. The amendments will directly target environmental activists and are a response to direct action protests from ... Read more »

Trump social-media venture under scrutiny by US regulators

The Associated PressFILE – In this July 24, 2021, file photo former President Donald Trump smiles as he pauses while speaking to supporters at a Turning Point Action gathering in ... Read more »

Bitcoin 'flash crash' sees long positions worth $2bn closed by exchanges

The world's largest cryptocurrency licks its wounds following another plunge downwards during which it lost more than a fifth of its value at one stage. Read more »

Spider-Man: Across the Spider-Verse Part 1 trailer – 8 things you may have missed

Potential spoilers follow for Spider-Man: Across the Spider-Verse Part 1. It’ll be time to return to the Spider-Verse soon. And no, we’re not just talking about Spider-Man: No Way Home. ... Read more »

What we know about Biden's Alliance for the Future of the Internet

A new frontier in the battle for the web may emerge this week. At a virtual “Summit for Democracy” hosted by President Joe Biden, the White House is expected to ... Read more »

This could be the world's first DDR5 laptop, but you'd never guess who built it

Embattled Chinese manufacturer Huawei is not giving up on laptops – at least not yet. Although the company’s MateBook X Pro, MateBook 14 and MateBook D15 were amongst the more ... Read more »
On free-english-test.com you will find lots of free English exam practice materials to help you improve your English skills: grammar, listening, reading, writing, ielts, toeic