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?

  • thayerEnglish
    15·
    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