Hardening in Debian 10

1. How do I harden Debian?
2. How do I harden my desktop Linux?
3. How do I know if my Linux server is hardening?
4. What is server hardening in Linux?
5. How do I harden Ubuntu?
6. How do I know if my Linux is secure?
7. How do I make Linux Mint more secure?
8. How do I make Ubuntu safer?
9. How can I make Ubuntu 20.04 more secure?
10. Why is hardening important after installing a Linux OS?
11. What is the most secure version of Linux?
12. How do I improve security on Linux?

How do I harden Debian?

A few basic Linux hardening and Linux server security best practices can make all the difference, as we explain below:

1. Use Strong and Unique Passwords. ...
2. Generate an SSH Key Pair. ...
3. Update Your Software Regularly. ...
4. Enable Automatic Updates. ...
5. Avoid Unnecessary Software. ...
6. Disable Booting from External Devices. ...
7. Close Hidden Open Ports.

How do I harden my desktop Linux?

In addition, you may also consider some of these nice-to-have steps to further harden your system:

1. Check to ensure sshd service is disabled by default.
2. Configure the screensaver to auto-lock after a period of inactivity.
3. Set up logwatch.
4. Install and use rkhunter.
5. Install an Intrusion Detection System.

How do I know if my Linux server is hardening?

You can view current status of SELinux mode from the command line using 'system-config-selinux', 'getenforce' or 'sestatus' commands. If it is disabled, enable SELinux using the following command. It also can be managed from '/etc/selinux/config' file, where you can enable or disable it.

What is server hardening in Linux?

System hardening is the process of doing the 'right' things. The goal is to enhance the security level of the system. There are many aspects to securing a system properly. Yet, the basics are similar for most operating systems. So the system hardening process for Linux desktop and servers is that that special.

How do I harden Ubuntu?

The following tips and tricks are some easy ways to quickly harden an Ubuntu server.

1. Keep System Up-To-Date. ...
2. Accounts. ...
3. Ensure Only root Has UID of 0. ...
4. Check for Accounts with Empty Passwords. ...
5. Lock Accounts. ...
6. Adding New User Accounts. ...
7. Sudo Configuration. ...
8. IpTables.

How do I know if my Linux is secure?

Linux hardening: A 15-step checklist for a secure Linux server

1. Document the host information. ...
2. BIOS protection. ...
3. Hard disk encryption (confidentiality) ...
4. Disk protection (availability) ...
5. Lock the boot directory. ...
6. Disable USB usage. ...
7. System update. ...
8. Check the installed packages.

How do I make Linux Mint more secure?

An extremely short summary of the best security practice in Linux Mint is this: - Use good passwords. - Install updates as soon as they become available. - Only install software from the official software sources of Linux Mint and Ubuntu.

How do I make Ubuntu safer?

10 simple ways to make your Linux box more secure

1. Enable your firewall. ...
2. Enable WPA on your router. ...
3. Keep your system up to date. ...
4. Don't use root for everything. ...
5. Check for unused accounts. ...
6. Use groups and permissions. ...
7. Run a virus checker. ...
8. Use secure passwords.

How can I make Ubuntu 20.04 more secure?

Initial Set-up

1. Upgrade Software. Always a good idea to get the latest patches and security fixes: apt update; sudo apt upgrade. ...
2. Create a user. ...
3. Add user to the sudo group. ...
4. Setup a basic firewall. ...
5. Set up Two Factor Authentication (2FA) ...
6. Passwordless auth. ...
7. Install fail2ban.

Why is hardening important after installing a Linux OS?

The more complex a machine gets the more security threats it introduces. ... That is why we need Linux Hardening, to prevent malicious activities to be run on our system through its components, thus making sure Data Security is on top of its game.

What is the most secure version of Linux?

Most secure Linux distros

• Qubes OS. Qubes OS uses Bare Metal, hypervisor type 1, Xen. ...
• Tails (The Amnesic Incognito Live System): Tails is a live Debian based Linux distribution considered among the most secure distributions together with the previously mentioned QubeOS. ...
• Alpine Linux. ...
• IprediaOS. ...
• Whonix.

How do I improve security on Linux?

So here are five easy steps to enhance your Linux security.

1. Choose Full Disk Encryption (FDE) No matter which operating system you are using, we recommend that you encrypt your entire hard disk. ...
2. Keep your software up-to-date. ...
3. Learn how to use Linux's firewall. ...
4. Tighten up security in your browser. ...
5. Use anti-virus software.