Do you need a Firewall on Linux?

What is Linux firewall? Do you need? How to set up and configure it. Everything in this video.

In addition, you will learn how to setup and configure the Uncomplicated Firewall (ufw) both graphically and through the terminal. And how to configure a simple stateful firewall through iptables for more advanced users.

Commands used in the video:
sudo ufw enable
sudo ufw status verbose
sudo ufw allow ssh
man ufw
sudo iptables -N TCP
sudo iptables -N UDP

Tags: #AverageLinuxUser #Linux #firewall

################################################

################################################

More cool Linux stuff at other social media:

[ossamaboufarra]

when ever i had any issue in my linux system, i just watch your videos, and everything works well, thank you much .

[serge]

Hello ALU,
Recommending the Arch script is a bad idea. If you don't understand what iptables does don't use it!
By the way iptables is deprecated and will be replaced by nftables.
There are Linux distributions which have a detailed iptables enabled OOTB like Fedora and Linux Lite for instance.
You need a deep understanding of networking to be able to use iptables correctly. So in doubt be cautious!!!
Cheers

[CallsignEskimo-lo]

Three steps to improve your security:


1. Run Linux
2. Activate GUFW
3. Run your browser in Firejail

[MrSammotube]

Thanks for this - it is amazingly reassuring to just switch on the firewall with gufw!

[aitchpea]

Just a note. UFW is installed and enabled by default in Ubuntu 16.04 and later, but gufw shows the service as disabled. Enabling it with gufw doesn't seem to affect it, but does allow you to then actually use the GUI.

[agilsadygov]

A big thumb up for your work in explaining Linux to masses. Respect! Also, have you ever consider doing your channel in Russian too as it would be way easier for you? Otherwise great work, so keep going mate :D

[kimituukkanen]

Thank you very much for this video about firewalls. Enabling firewall makes me feel safe. :)

[professormoriarty]

They are building a tower block the bottom of the tower block is loosely locked it only needs to look after two things. All the other floors have balcony doors that have many things in them like a desktop GUI. Some of the GUI can be seen and contacted by the outside. Linux the kernel the firewall only knows what it should keep out it is a one-way firewall. GUI without a firewall can be logged onto the GUI can be seen and brute force can be used for password guessing. The longer you can be seen the longer they have a chance of eventually cracking this password. A firewall hides your desktop GUI from the outside world. It protects your desktop from other desktops.

Sometimes in an office environment you can see somebody else's computer try it just select network and you may see a computer name. It is probably the same name as the user: fred-HP-Z840-workstation.
So you have the name which is fred you now only need the password most passwords are simple easy to remember and easy to brute force. If Fred had the firewall switched on I would not be able to log onto his computer.

[jonathanmoore]

I'm going to build a wall, a great wall.... Wait... I already have no open ports... Linux, is a great guy.... The best.

[العرندس-عل]

Dear .. Many Thanks for cool information uoy applied .
i recently install LINUX MINT CENEMON And XAMPP.
i need to publish it to the web .. but i dont know how
i change the router setting but no hope
how i can trople shoot and see where is the problem ?

can you help ?


Many Thanks.

[RobMax]

I think ANY computer user will agree, YOU NEED A FIREWALL No matter the OS.... Just set one up and you'll be golden

[Phoenixwizard]

Wow. That was super easy. Thanks man. (again)

[Steven_nevetS]

iptables is way to complicated for me! But good to know. Thanks for the vid

[lakshminarasimmanv]

I was a ufw user but switched to iptables. I fully tried to write my own iptables rules for more than a week. Blocked internet many times, I used nmap to scan my network and fix vulnerabilities. So it’s not that hard.

[SilverFoxww]

GUFW is pre-installed on Linux Mint. You just need to switch it on.

[kirbfx]

I activate a firewall through my vpn service. Is that the same as use a Linux firewall?? Can and if so, should I run both a Linux firewall and my VPN’s firewall??

[NADEEMKHAN-sjhn]

Is portmaster is the better firewall than firewalld and ufw/gufw

[amytn]

Hi,
Do I need to log in/authenticate UFW every time I search the internet/run an application?
In the terminal UFW shows active.

[Rednunzio]

It’s possible block any outgoing connection from specific application?

[debeeriz]

i found the firewall got in the way when sharing files, so i disabled it back in 2012 never had a problem