There are constant level of high attacks and port scans on Linux servers all the time, while a properly configured firewall and regular security system updates adds a extra layer to keep the system...
Cryptmount is a powerful utility which allows any user to access encrypted filesystems on-demand under GNU/Linux systems without requiring root privileges. It requires Linux 2.6 or higher. It handles both encrypted partitions as well...
FTP or File Transfer Protocol is one of the oldest network protocol used today as standard file transfers over computer networks. FTP protocol uses the standard port 21/TCP as command port. Although, there are...
Some system administrators often block ICMP messages to their servers in order to hide the Linux boxes to outside world on rough networks or to prevent some kind of IP flooding and denial of...
Meltdown is a chip-level security vulnerability that breaks the most fundamental isolation between user programs and the operating system. It allows a program to access the operating system kernel’s and other programs’ private memory...
In our mega guide to hardening and securing CentOS 7, under the section “protect system internally”, one of the useful security tools we listed for internal system protection against viruses, rootkits, malware, and detection...
Basic HTTP authentication is a security mechanism to restrict access to your website/application or some parts of it by setting up simple username/password authentication. It can be used essentially to protect the whole HTTP...
This guide will show how to lock a system user’s account after a specifiable number of failed login attempts in CentOS, RHEL and Fedora distributions. Here, the focus is to enforce simple server security...
Security-Enhanced Linux (SELinux) is a security mechanism for mandatory access control (MAC) implemented in the Linux kernel. It is a flexible operation designed to boost overall system security: it enables access controls imposed using...
In Linux, hard and soft links are referenced to files, which are very important, if not protected very well, any vulnerabilities in them can be exploited by malicious system users or attackers. A common...
