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Do I need a firewall for my fedora 38? (lemmy.dbzer0.com)
submitted 1 year ago by Harry_h0udini@lemmy.dbzer0.com to c/linux@lemmy.ml
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Do I need a firewall for my fedora 38?

I'm new to Linux, previously been on Windows where I used defender + Windows firewall. Now I'm on fedora which also have its firewall called firewalld. Are those sufficient, or do I need any other solutions for my security?

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[-] thayer@lemmy.ca 15 points 1 year ago* (last edited 1 year ago)

I treat all guests on the network as potentially hostile, so I enable firewalls on all of my hosts.

I believe that Fedora's firewall is enabled by default, but it leaves open ports 1025-65535/tcp and 1025-65535/udp.

To lock down some sane defaults:

sudo firewall-cmd --permanent --remove-port=1025-65535/tcp
sudo firewall-cmd --permanent --remove-port=1025-65535/udp
sudo firewall-cmd --reload

Verify allowed ports with:

sudo firewall-cmd --list-ports

See also:

PS: if you have a Steam Link, you'll want to open these ports for connectivity:

sudo firewall-cmd --permanent --add-port=27031/udp  # steam remote play
sudo firewall-cmd --permanent --add-port=27036/udp  # steam remote play
sudo firewall-cmd --permanent --add-port=27036/tcp  # steam remote play
sudo firewall-cmd --permanent --add-port=27037/tcp  # steam remote play
[-] GustavoM@lemmy.world 3 points 1 year ago

That is a really solid tip! Don't mind me if I yoink it.

[-] serratur@lemmy.wtf 2 points 1 year ago

You can also achieve this by setting up VLAN for guests

this post was submitted on 29 Sep 2023
39 points (100.0% liked)

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