Many people thinks that when they install Linux, their internet is already safe, but this is not true because the default settings for time and DNS does not use any encryption. If…
How to Hardening DNF on Fedora/Almalinux
Many people think Linux is super safe and nobody can hack it but this is very wrong because if you have bad package hygiene your system will get very messy and unsafe….
How to Masking & Secure Daemon in Linux Server
When you start a new Linux server like using Fedora F44 cloud image, you think it is already clean and very safe, but actually it have many active services running inside that…
How to Hardening Mount Option in Linux Server
You have Linux computer but you do not know that your folders can be very dangerous for security. Hackers can put bad virus inside folders like /tmp or /home and they can…
How to Secure Linux Server with AIDE
If you run Linux server, you must make sure nobody change your files without you knowing. Sometimes hackers can enter your system and change important files like config files or system binaries…
Auditd Custom Rules & Tips
Many people install Linux and think it is safe from hackers, but that is not true. When you install a fresh Linux, it have a tool called auditd but this tool is…
Securing SSH Server with fail2ban
Many bad hackers try to login my Linux server every days because they want to steal my data and use my server for bad things. They use robot programs that try thousands…
Fedora Linux Firewalld Drop Zone and Rich Rules
Many people who has server do not know about safety. They just run server and then bad hackers from internet come and steal everything. When you install Fedora Linux, the default setting…
How to SSH Hardening 2026
Many times when we install Linux, the default SSH config is very weak and have many security holes. If you run a CIS L1 Server scan on your fresh machine, it will…
How to Add Password Protection to GRUB
If you think your Linux computer is very safe because you have a very long password for your user login you are totally wrong my friend. Anyone can easily bypass your login…