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…
Linux Kernel Hardening: Command-line Lockdown
Linux is a very good operating system but sometimes it is not safe enough because bad hackers can find ways to break inside your computer even if you have a strong password….
Make Linux Kernel More Safe and Hardening with Sysctl Easy Way
Linux is very good operating system but sometimes default setting is not very secure for your computer because it want to make everything easy and compatible for everyone. If you want your…
How to Lockdown Root & Wheel Group in Linux
Many peoples start their own Linux server because it is cheap and very fun to play. But they do not know that bad hacker boys scan the internet every second to find…
How to Secure Sudo in Linux (Secure Sudo Logging & Timeout)
Sudo is very important tool in Linux system but many people not know that default settings is not very safe for monitor what people do. When someone use sudo, the system only…