Lpi 303-200: LPIC-3 Exam 303: Security, version 2.0 : 303-200

303-200 real exams

Exam Code: 303-200

Exam Name: 303-200: LPIC-3 Exam 303: Security, version 2.0

Updated: Aug 19, 2026

Q & A: 60 Questions and Answers

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LPI 303-200 Certified salary

  • United States: 84930 USD
  • Europe: 72042 Euro
  • India: 6367265 INR
  • England: 65112 Pound

Introduction to LPI 303-200 Exam

The LPIC-3 certification is the end result of the Linux Professional Institute (LPI) multi-level professional certification program. LPIC-3 was created for enterprise-level Linux professionals and represents the highest level of independent Linux expert and distribution certification in the industry. There are three separate LPIC-3 special certifications available. Successful completion of any of the 3 tests will guarantee LPIC-3 accreditation for that specialty.

Target Audience

The LPI 303-200 exam is for candidates who want to excel in LPI technologies and explore the industry best practices. Linux administrators and professionals who already know how to efficiently work with networks of small to medium size are the main target audience for this test. When it comes to prior knowledge, the candidates appearing for 303-200 should have strong awareness of all the topics included in the syllabus.

Reference: https://www.lpi.org/our-certifications/exam-303-objectives

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Lpi 303-200 Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: Host Security13%- Host Hardening
  • 1. Service minimization and privilege reduction
    • 2. SSH certificate authentication
      • 3. Kernel security features and sysctl
        • 4. Boot loader and BIOS security
          - Resource Control
          • 1. Process isolation techniques
            • 2. cgroups and systemd resource limits
              - Host Intrusion Detection
              • 1. System auditing and integrity monitoring
                • 2. Rootkit detection tools
                  Topic 2: Network Security17%- Network Hardening
                  • 1. Rogue device detection
                    • 2. Secure network services
                      - Virtual Private Networks
                      • 1. OpenVPN configuration
                        • 2. IPsec/IKEv2 with strongSwan
                          • 3. WireGuard setup and management
                            - Network Intrusion Detection
                            • 1. IDS systems configuration
                              • 2. Vulnerability scanning tools
                                - Packet Filtering
                                • 1. iptables and ip6tables rules
                                  • 2. Connection tracking and NAT
                                    • 3. IP sets and advanced filtering
                                      Topic 3: Cryptography17%- DNS and Cryptography
                                      • 1. BIND secure server setup
                                        • 2. DNSSEC configuration and management
                                          • 3. DANE and CAA records
                                            - X.509 Certificates and Public Key Infrastructures
                                            • 1. Public Key Infrastructure (PKI) concepts
                                              • 2. OpenSSL usage and configuration
                                                • 3. X.509 certificate structure and lifecycle
                                                  • 4. Certificate authorities, issuance and revocation
                                                    - X.509 Certificates for Encryption, Signing and Authentication
                                                    • 1. HTTPS configuration with Apache HTTPD
                                                      • 2. Client and server authentication via certificates
                                                        • 3. SSL/TLS protocols and cipher suites
                                                          - Encrypted File Systems
                                                          • 1. PAM integration for encrypted home directories
                                                            • 2. eCryptfs file system encryption
                                                              • 3. dm-crypt and LUKS encryption
                                                                Topic 4: Threats and Vulnerability Assessment5%- Penetration Testing
                                                                • 1. Penetration testing methodology
                                                                  • 2. Security assessment tools
                                                                    • 3. Nmap network scanning
                                                                      - Common Security Vulnerabilities and Threats
                                                                      • 1. Defense strategies
                                                                        • 2. Attack vectors and threats classification
                                                                          Topic 5: Access Control8%- Discretionary Access Control
                                                                          • 1. File permissions and ACLs
                                                                            • 2. Extended attributes
                                                                              - Mandatory Access Control
                                                                              • 1. SELinux configuration and administration
                                                                                • 2. Awareness of AppArmor and Smack
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