How to Open Port for a Specific IP Address in Firewalld
How can I allow traffic from a specific IP address in my private network or allow traffic from a specific private network through firewalld, to a specific port or service on a Red Hat
Security
How to Install Security Updates in Ubuntu
One of the easiest ways to protect your Ubuntu systems is by keeping up to date software on them. Therefore applying updates frequently is an important part of maintaining secure systems. In this article,
Protect Apache Against Brute Force or DDoS Attacks Using Mod_Security and Mod_evasive Modules
For those of you in the hosting business, or if you’re hosting your own servers and exposing them to the Internet, securing your systems against attackers must be a high priority. mod_security (open-source intrusion
How to Install and Use Linux Malware Detect (LMD) with ClamAV as Antivirus Engine
Malware, or malicious software, is the designation given to any program that aims at disrupting the normal operation of a computing system. Although the most well-known forms of malware are viruses, spyware, and adware,
23 CentOS Server Hardening Security Tips – Part 2
Continuing the previous tutorial on How to Secure and Harden CentOS server, in this article, we’ll discuss other security tips that will be presented on the below checklist. Requirements 20 CentOS Server Hardening Security
20 CentOS Server Hardening Security Tips – Part 1
This tutorial only covers general security tips for CentOS 8/7 which can be used to harden the system. The checklist tips are intended to be used mostly on various types of bare-metal servers or
How to Install Security Updates on CentOS 8
Keeping your Linux system up-to-date is a very critical task, especially when it comes to installing security updates. This ensures that your system stays safe, stable, and keeps you on top of the latest
How to Restrict Network Access Using FirewallD
As a Linux user, you can opt either to allow or restrict network access to some services or IP addresses using the firewalld firewall which is native to CentOS/RHEL 8 and most RHEL based
How to Increase SSH Connection Timeout in Linux
SSH timeouts as a result of inactivity can be quite irritating. This usually compels you to reinitiate the connection and start all over again. Thankfully, you can easily increase the SSH timeout limit and
How to Secure and Harden OpenSSH Server
When it comes to accessing remote devices such as servers, routers, and switches, SSH protocol comes highly recommended given its ability to encrypt traffic and ward off anyone who might try to eavesdrop on