Do you know most of the security vulnerabilities can be fixed by implementing necessary headers in the response header? Security is as essential as content and SEO of your website, and thousands of websites get hacked due to misconfiguration or lack of protection. If you are a website owner or security engineer and looking to protect your…
How to automatically clean up /tmp directory contents in Linux? Every Linux system has a directory called /tmp which has mounted with separate file system. It has special filesystem called tmpfs. It’s a virtual filesystem and operating system will automatically mount /tmp mount point while system booting. If you want to mount /tmp directory separately as…
Making the following update to your Nginx .conf file will prevent your website from being accessed directly by it’s IP address You’ll need to create a new server block and configure it such that any requests to the servers IP address will instead be redirected to the domain name. Now, when a request is made…
While the mailserver generally requires little interaction for those sending or receiving average volumes of email, there may be times when you wish to manage Exim’s settings. To do so, first log in to your server in a terminal client using secure shell (SSH). Use the following commands to work with Exim. Display the number…
This article describes how to check and upgrade the Linux kernel in OpenVZ, KVM, and Dedicated Servers (including the CloudLinux platform). Checking the Kernel Version To check system parameters such as the kernel version and build date, OS architecture, hostname, etc., you can use the uname command, which is included in coreutils package: # uname -rv 3.10.0-693.11.6.el7.x86_64 #1 SMP Thu Jan…
ConfigServer Security & Firewall (CSF) is an iptables-based firewall that provides high-level security to the Linux system. CSF includes a wide range of features, such as IP blocking, port blocking, and DoS protection. It also supports advanced security measures, such as rate limiting, connection tracking, and SSH login detection. In addition to its firewall features,…