June 14, 2024


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Security Features: Evaluating Rocky Linux and AlmaLinux

3 min read
Security Features Evaluating Rocky Linux and AlmaLinux

In the landscape of Linux distributions, security is a paramount concern for businesses and individual users alike. Two prominent contenders in the enterprise Linux space, Rocky Linux and AlmaLinux, have emerged as popular alternatives to CentOS after its shift to a rolling release model. This article delves into the security features of these two distributions, evaluating their strengths and differences to help you decide which one best fits your needs.

Rocky Linux and AlmaLinux were both created to fill the void left by CentOS, offering users a stable, secure, and reliable platform. While they share a common lineage and similar objectives, their approaches to security have nuanced differences that could influence your choice depending on your specific requirements.

Security Features of Rocky Linux

Rocky Linux

Stability and Predictability

Rocky Linux emphasizes stability and predictability, crucial for maintaining secure environments. It achieves this by closely tracking Red Hat Enterprise Linux (RHEL) releases, ensuring that security updates and patches are promptly applied. This alignment with RHEL means that users benefit from robust, well-tested security features inherent to RHEL.


Security-Enhanced Linux (SELinux) is a cornerstone of Rocky Linux’s security framework. SELinux enforces mandatory access controls, limiting the potential damage from compromised applications. By default, Rocky Linux ships with SELinux in enforcing mode, providing a high level of security out of the box.

Secure Boot

Rocky Linux supports Secure Boot, a security standard developed to ensure that a device boots using only software that is trusted by the Original Equipment Manufacturer (OEM). This prevents malicious code from running during the boot process, safeguarding the system from low-level attacks.

Compliance and Auditing

For enterprises requiring compliance with standards like HIPAA, PCI-DSS, or FISMA, Rocky Linux offers comprehensive auditing tools. The Audit daemon (auditd) tracks system calls and logs them for later analysis, helping organizations maintain compliance and monitor for security breaches.

Security Features of AlmaLinux


Stability and Reliability

Like Rocky Linux, AlmaLinux tracks RHEL closely, providing users with a stable and secure operating system. This close tracking ensures timely updates and patches, essential for maintaining a secure environment. AlmaLinux’s commitment to binary compatibility with RHEL translates to a reliable security posture.

SELinux and AppArmor

AlmaLinux also integrates SELinux for enforcing security policies. Additionally, it offers support for AppArmor, another security module that confines programs to a limited set of resources. This dual support gives administrators flexibility in choosing their preferred security framework, enhancing the overall security of the system.

Secure Boot

AlmaLinux supports Secure Boot as well, ensuring that the system firmware verifies the digital signature of boot loaders and kernel images before executing them. This feature is critical in preventing unauthorized software from compromising the boot process.

Security Updates and Vulnerability Management

AlmaLinux ensures that security updates are delivered promptly. The AlmaLinux OS Foundation collaborates closely with the community and upstream providers to patch vulnerabilities swiftly. Additionally, AlmaLinux provides tools for vulnerability scanning and management, helping administrators identify and mitigate security risks proactively.

Rocky Linux vs AlmaLinux: Security Perspective

When comparing “Rocky Linux vs AlmaLinux” from a security perspective, both distributions offer robust security features aligned with enterprise needs. Their commitment to SELinux, Secure Boot, and timely security updates ensures a solid foundation for secure operations.

However, there are subtle differences:

  1. Flexibility with Security Modules: AlmaLinux’s support for both SELinux and AppArmor provides additional flexibility for administrators who may prefer one security framework over the other. This can be a deciding factor for organizations with specific security requirements.
  2. Community and Support: While both distributions are community-driven, the choice between Rocky Linux and AlmaLinux might come down to the community support and resources available. Rocky Linux, spearheaded by one of CentOS’s original co-founders, might appeal to users seeking continuity with CentOS’s legacy.
  3. Compliance and Auditing: Both distributions offer robust auditing capabilities, but specific tools and integrations might vary. Organizations with stringent compliance requirements should evaluate the auditing tools and support available in each distribution.

Also Read: What Are the Advantages of Linux KVM VPS Hosting in India?


In the debate of Rocky Linux vs AlmaLinux, both distributions stand out as secure, reliable alternatives to CentOS. They offer strong security features like SELinux, Secure Boot, and timely updates, making them suitable for a variety of enterprise environments. The choice between the two will ultimately depend on specific security needs, community support, and personal preference. Regardless of the choice, both Rocky Linux and AlmaLinux ensure that users can maintain a secure and stable operating environment.

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