Linux Security

Introduction: Understanding Seccomp Seccomp is a Linux kernel feature that enables administrators to restrict the actions that a process can perform, thus providing an additional layer of security. It stands for “secure computing mode” and was first introduced in the 2.6.12 kernel. Seccomp is a powerful tool for enhancing the security of a Linux system, as it helps to mitigate the risks of exploitation from untrusted code and malware. How Seccomp Works Seccomp works by limiting the system calls that a process can make. [Read More]

Introduction Libvirt is an open-source tool used for managing virtual machines on Linux systems. One of the challenges with virtualization is ensuring that the host system and virtual machines are secure. SELinux, or Security-Enhanced Linux, is a security module that can be used to add an additional layer of security to both the host system and virtual machines. In this article, we will explore how SELinux can be used to protect the host and virtual machines. [Read More]

Rootkits on Linux: A Threat to System Security A rootkit is a type of malicious software that allows an attacker to gain privileged access to a computer system. This access can be used to steal sensitive information, install additional malware, or carry out other malicious activities. Rootkits on Linux can be particularly dangerous, as they can go undetected for long periods of time and allow an attacker to gain complete control over the system. [Read More]

SCAP and OpenSCAP: Enhancing Computer Security The Security Content Automation Protocol (SCAP) is a suite of standards designed to help organizations manage their computer security vulnerabilities. It provides a standardized method for identifying, measuring, and evaluating security risks across an organization’s infrastructure. OpenSCAP is an open-source implementation of SCAP that provides a set of tools and libraries for integrating SCAP into an organization’s security management framework. SCAP Standards: Identifying and Measuring Security Risks The SCAP suite includes several standards for identifying and measuring security risks, including the Common Vulnerabilities and Exposures (CVE) dictionary, the Common Configuration Enumeration (CCE) standard, and the Common Platform Enumeration (CPE) standard. [Read More]

SELinux: Enhancing System Security SELinux stands for Security-Enhanced Linux, which is a security module implemented in the Linux kernel. It provides an additional layer of security by enforcing mandatory access control policies on top of the traditional discretionary access control mechanisms provided by the Linux kernel. SELinux was developed by the National Security Agency (NSA) and external contributors in collaboration with Red Hat and has been integrated into various Linux distributions, including Red Hat Enterprise Linux, Rocky Linux, AlmaLinux, and Fedora. [Read More]

Introduction The Linux Kernel Virtual Machine (KVM) is a hypervisor that allows multiple virtual machines to run on a single Linux host machine. KVM is an open-source technology that is integrated into the Linux kernel and supports various hardware platforms, including x86, ARM, and PowerPC. In this article, we will discuss the key features and benefits of KVM, how it works, and how to install and configure KVM on a Linux machine. [Read More]