IT security is paramount in today's digital age. As businesses increasingly rely on technology to operate, protecting sensitive data and preventing cyberattacks becomes a top priority. Cloud adoption introduces additional security risks, including data breaches and loss of access. A strong IT security infrastructure safeguards customer information, financial data, intellectual property, and overall business operations. By investing in robust security measures, organizations can mitigate risks, maintain trust with customers, and ensure business continuity.

A multi-layered security architecture is essential for protection. Key areas to focus on include:

Hardware-Level Security: Prevent physical tampering and ensure data integrity.

- Virtualization Security: Isolate environments and control resource access.

- Management Tool Security: Secure hardware and cloud resources.

- Operating System Security: Continuously update for robust security.

- Storage Security: Protect data at rest and in transit.

- Networking Security: Prevent unauthorized access and data breaches.

This Redbook describes how the IBM Power ecosystem provides advanced security capabilities at each of these layers. IBM Power systems are designed with security as a core consideration.

At the hardware level, advanced technology includes tamper-resistant features built into the processor to prevent unauthorized access and modifications, secure cryptographic engines to provide strong encryption of data, and Trusted Boot to ensure that only authorized software components are loaded during system startup.

At the virtualization level, the hypervisor which manages virtual machines is designed to be secure and resistant to attacks. The hypervisor isolates workloads within a single physical server, allowing for secure resource sharing within your infrastructure. The Hardware Management Console (HMC) provides centralized management and control of Power systems in a secure manner.

The operating systems that run on IBM Power servers AIX, IBM i, and Linux on Power offer robust security features, including user authentication, access controls, and encryption support. In addition, tools such as IBM PowerSC provide a comprehensive security and compliance solution that helps manage security policies, monitor threats, and enforce compliance.

Security also requires solid management and control. This book describes best practices such as conducting regular security audits, keeping operating systems and applications up-to-date with the latest security patches, and implementing strong user authentication and authorization policies. Other critical elements include the implementation of data encryption for both data at rest and in flight, and strong network security processes utilizing firewalls, intrusion detection systems, and other security measures.

By combining these hardware, software, and management practices, IBM Power systems provide a robust foundation for security in your IT environment.

Chapter 1. Security and cyber security challenges

Chapter 2. Protection across every layer

Chapter 3. Security in the Virtualization and Management Layer

Chapter 4. AIX Security

Chapter 5. IBM i Security

Chapter 6. Linux security and compliance on IBM Power

Chapter 7. Red Hat OpenShift Security

Chapter 8. Certifications

Chapter 9. PowerSC

Chapter 10. IBM Power Virtual Server Security

Chapter 11. Lessons Learned and Future Directions in Power System Security

Appendix A. IBM Technology Expert Labs Offerings

Appendix B. Ecosystem and products