How to Install SELinux to Harden Apache Webserver
Security Enhanced Linux or SELinux is responsible for the implementation of mandatory access control mechanisms on major Linux distributions like Fedora, RHEL, and Rocky
Linux Security
How to Install SELinux to Harden Nginx Webserver
For Linux users that have exposed themselves to RHEL-based distributions like RHEL, Fedora, AlmaLinux, and Rocky Linux, SELinux is not a new concept to
How to Use Netcat to Scan Open Ports in Linux
The Netcat (in short NC) is a feature-rich computer networking, debugging and investigation utility that supports an extensive range of commands to manage networks
How to Generate Self-Signed SSL Certificates using OpenSSL
Ideally, SSL certificates are issued by publicly trusted certificate authorities (e.g. Let’s Encrypt, Comodo, Verisign) to provide authentication and encryption on the internet. However,
How to Disable SSH Login to Specific User in Linux
As you might already know, SSH (Secure Shell) is a network protocol for securely accessing a computer remotely. The server and client software in
How to Block a Port Using a Firewall in Linux
A firewall is either a software-based or, in some cases, a hardware-based security system for networks. It automatically monitors traffic inflow and outflow on
How to Find and Close Open Ports in Linux
Network and Server administration is one of the key areas in which Linux is actually preferred to any other operating system. Hence most data
How to Find What IP Addresses are Connected to Linux
A server is application software that listens to requests over a network and returns the requested files, data, etc. Linux machines have servers installed