so i want to know about setting up firewall in zorin os light.
so basically i am new to this linux os, and i have set my firewall to Status=On, Incoming=Deny, Outgoing=Allow. and i want to know am safe with this settings?? please help
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Is there a way to understand the firewall settings to get the right settings? I'm a bit confused about setting up a firewall.
In the years I've been solely using Linux, the only time I've had to do anything with regards to the firewall was to allow for KDE Connect, to sync with my cell. Outside of that, just leave it be. Have had Zero issues.
so basically i am safe? is there any things else so that i can do to be more safe on the internet, i even deny the the out going connections but i noticed the internet speed decreased, how i can make my computer more safe so that if i accidentally click a link or mail with malware in it, i will be safe.... i turn on hotspot from my mobile and connect my computer through Wi-Fi....
In using a Linux OS instead of Windows, many pieces of Malware will not be applicable to the Linux operating system and ineffective. A bit how a virus that targets newts will not have any affect on a human.
I agree with all comments about the firewall: Set it up as Default. Denying connections manually is more likely to cause you headaches. I understand if you want to learn more- that will take time and a forum is not really the ideal place to get a thorough education. A forum is good for fast tips and help. During the time that you spend learning more and more about firewall configuration, through documentation, you can rely on the default firewall settings to keep you in the clear.
Even so, there is only so much you can do with a firewall. Think First Party, Second Party, Third party. Let's say that you want to buy a watch.
First Party is if you go to a reputable watch dealer.
Second party is if a friend offers to buy you the watch, as he says he 'knows a guy', and he then provides the watch to you.
Third party is if that friend has an agent, that buys the watch from some source, provides it to the friend, he then provides it to you.
Clearly, you can see that the safest option above is the First Party. Visiting a website or reading an email is the same.
It is best to avoid clicking links provided in an email as often as possible. Some sites use email verification with a link. You can check the sources before clicking it, however. But any link provided in an email that You Did Not Request is suspect.
While computers and programs can be impressive in how their algorithms work, they are still nowhere near to Human Intelligence, reasoning and decision making. You are the most powerful and intelligent firewall available to your computer. You can make fast decisions, double check a source, search the source rather than clicking a second party link and so on. A firewall cannot do any of that - it can only block regardless of content.
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is it true, if by chance if my zorin os gets infected by virus or a malware, so my that virus will also transfer to my phone, as i connect my pc with mobile hotspot, so my question is does virus or malware transfer with Wi-F ??
Generally, no. Your Mobile device runs on an ARM OS, which would not be any more compatible for any possible virus than Windows would.
This is a general answer. It does not mean that such as you describe is 'impossible.' Something could be written to do just that. But the odds of you encountering such a thing is significantly less than you getting struck by lightning while inside of a crashing jet that also collides with an incoming meteorite.
Unless you are a secret agent or deep into the dark web with bitcoin theft- you really would not need to worry about that. Because someone would have to quite literally have to be out to get you. In such a case, the automated Firewall would not be very much help, anyway.
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I am second to your opinion.
All those years of Linux use, I've never changed my Firewall setting from default.
I also have Pi-hole installed on a stick computer which also works as a DHCP server. It can block a lot of spamming sites on the net. Highly recommended.
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An isolated computer is the only safe computer. That means not inserting USB sticks or any network connection. That is not really practicable in this day and age.
I agree, always best to ... engage brain before clicking
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So as I was about to hook up Zorin Connect with my cell, no firewall on Z16?
Did I miss something...?
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You can do a
sudo apt install gufw
I did not even notice. Surprised me too.
Makes me want to ask..... Is it because it's "Built Into the system"...?
Seems like it would be a glaring omission to me.
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Oh and @Aravisian , Thanks. Firewall added. 
I do agree on this - Maybe we are missing something.
The Firewall is pre-installed in Zorin OS 16 and can be found under Settings > Network > Firewall Configuration
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Is it UFW? I'm not trying to be difficult here but uhh... Terminal says neither gufw nor ufw is installed.
I just logged into Gnome, went to settings, network - there is a Firewall configuration button. Nothing happens when I click it.
If I open terminal and move to install (As I posted above):
sudo apt install gufw
sudo apt install gufw
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following additional packages will be installed:
ufw
The following NEW packages will be installed:
gufw ufw
0 upgraded, 2 newly installed, 0 to remove and 0 not upgraded.
Need to get 1,034 kB of archives.
After this operation, 4,503 kB of additional disk space will be used.
Do you want to continue? [Y/n]
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You mind-reader... I almost made this wisecrack earlier... But decided against it. 
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Yes, both GUFW and UFW come pre-installed in Zorin OS. If they aren't installed on your system perhaps you may have accidentally uninstalled them or there may have been an upgrade issue if you are still using the original Beta install of Zorin OS 16
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I apologize. I needed to be sure.
Yes, I am still using Zorin OS 16 Beta.
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OK, found it. Thanks Kyrill.
I did a search, thought it would of come up when I typed Firewall.
I also had already installed using the info from Aravi...
All Good, nothing to see here...!!!
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