JN0-351

The Juniper JN0-351 exam, "Security, Specialist (JNCIS-SEC)", focuses on the practical application of Juniper security technologies. The main points covered can be broadly categorized as follows:

1. Security Fundamentals: This section lays the groundwork. Expect questions on:

• Security concepts: Basic security principles like confidentiality, integrity, and availability (CIA triad), threat modeling, risk management, and security architectures.
• Common security attacks: Understanding various attack vectors like denial-of-service (DoS), man-in-the-middle (MitM), and various exploitation techniques. You should be able to identify attack signatures and understand their impact.
• Cryptography: Basic understanding of cryptographic concepts, including encryption algorithms, hashing, and digital signatures.

2. Juniper Security Technologies: This is the core of the exam. You'll need to know how to configure and troubleshoot these Juniper products and features:

• SRX Series Services Gateways: This is a major focus. Expect questions on configuring firewalls (including security policies, zones, and interfaces), VPNs (IPsec and SSL/TLS), intrusion prevention systems (IPS), and other SRX features like application control and advanced threat prevention. Understanding the CLI is crucial.
• Junos OS: A solid understanding of the Junos operating system, including its command-line interface (CLI), configuration methods, and troubleshooting techniques is essential.
• Security Director: This centralized management platform for Juniper security devices will likely be included, focusing on its role in policy management and monitoring.
• Specific Security Features: You'll need to know how to configure and troubleshoot specific security features, like:
  • Firewall Filters: Understanding how to create and manage firewall filters to control network traffic.
  • VPN Tunnels: Configuring and managing different types of VPN tunnels (site-to-site, client-to-site).
  • Intrusion Detection/Prevention: Understanding how to configure and interpret IPS logs and alerts.
  • Antivirus and Anti-malware: Basic understanding of these features and their configuration within the Juniper environment.

3. Network Security Practices: This section emphasizes the practical application of the technologies. Expect questions on:

• Security Policy Implementation: Designing and implementing security policies that align with organizational needs and best practices.
• Troubleshooting and Monitoring: Analyzing security logs, identifying security issues, and resolving them. You should be able to use Juniper's monitoring tools.
• High Availability and Redundancy: Understanding how to configure high availability and redundancy for Juniper security devices to ensure continuous operation.

In summary: The JN0-351 exam tests your ability to configure, manage, and troubleshoot Juniper's security solutions. Practical hands-on experience with Juniper SRX devices and the Junos OS is absolutely crucial for success. Focus on understanding the underlying principles, configurations, and troubleshooting techniques of the technologies mentioned above. Remember to utilize Juniper's official documentation and practice labs extensively.