this post was submitted on 29 Sep 2023
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Linux
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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
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Uncomplicated Firewall is easy to setup and understand. It blocks traffic and allows it. Install UFW
sudo apt install ufw
My recommended(Chris Titus)
`sudo ufw limit 22/tcp
sudo ufw allow 80/tcp
sudo ufw allow 443/tcp
sudo ufw default deny incoming
sudo ufw default allow outgoing
sudo ufw enable`
Is this enough?
This is fedora, I would stick with firewalld.
sudo dnf install firewalld
sudo systemctl enable --now firewalld
sudo firewalld-cmd --add-service --permanent ssh
sudo firewalld-cmd --add-service --permanent https
sudo firewalld-cmd --add-service --permanent http
sudo systemctl restart firewalld