• Exam Code: 303-300
  • Exam Name: LPIC Exam 303: Security, version 3.0
  • Certification Provider: Lpi
  • Corresponding Certification:LPIC-3
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303-300
  • Exam Code: 303-300
  • Exam Name: LPIC Exam 303: Security, version 3.0
  • Updated: Oct 01, 2026
  • No. of Questions: 163 Questions and Answers
  • Download Limit: Unlimited

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Lpi 303-300 Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: Threats and Vulnerability Assessment3%- Threat Analysis
  • 1. Application threats
  • 2. Network threats
  • 3. Credential and confidentiality threats
  • 4. Host-based threats
- Vulnerability Assessment
  • 1. Risk identification
  • 2. Security scanning
  • 3. OpenVAS
Topic 2: Network Security12%- Virtual Private Networks
  • 1. OpenVPN
  • 2. WireGuard
  • 3. IPsec and strongSwan
- Network Intrusion Detection
  • 1. Snort
  • 2. tcpdump
  • 3. Wireshark
  • 4. Kismet
- Network Hardening
  • 1. Secure network services
  • 2. TCP wrappers and service restrictions
- Packet Filtering
  • 1. NAT and connection tracking
  • 2. nftables awareness
  • 3. iptables and ip6tables
  • 4. IP sets
Topic 3: Host Security9%- Host Intrusion Detection
  • 1. Malware detection
  • 2. Rootkit detection tools
  • 3. Linux Audit system
  • 4. AIDE integrity checking
- Resource Control
  • 1. cgroups
  • 2. Process resource management
  • 3. ulimits
- Host Hardening
  • 1. Service hardening
  • 2. Kernel runtime protection
  • 3. Secure boot process
Topic 4: Cryptography8%- OpenPGP
  • 1. Web of trust concepts
  • 2. Manage GnuPG keys
  • 3. Sign and encrypt data
- X.509 Certificates and Public Key Infrastructures
  • 1. Create and manage certificates
  • 2. Manage certificate authorities
  • 3. Certificate revocation and validation
- Data Encryption
  • 1. Encrypt files and storage devices
  • 2. Secure data transmission
  • 3. Use LUKS and dm-crypt
Topic 5: Access Control8%- Mandatory Access Control
  • 1. AppArmor configuration
  • 2. Policy enforcement
  • 3. SELinux management
- Discretionary Access Control
  • 1. Extended attributes
  • 2. POSIX ACLs
  • 3. File permissions
- Authentication and Authorization
  • 1. Multi-factor authentication
  • 2. Centralized authentication
  • 3. PAM

Lpi LPIC Exam 303: Security, version 3.0 Sample Questions:

Which IPsec mode encapsulates and protects the entire original IP packet, including its header, typically used for site-to-site VPN gateways?

  • A. Main mode
  • B. Tunnel mode
  • C. Transport mode
  • D. Aggressive mode
Reveal Solution  Discussion  0

Correct Answer: B  🗳️

Explanation: Only visible for TrainingDump members. You can sign-up / login (it's free).

Which of the following information, within a DNSSEC- signed zone, is signed by the key signing key?

  • A. The DS records pointing to the zone.
  • B. The zone signing key of the zone.
  • C. The NSEC or NSEC3 records of the zone.
  • D. The non-DNSSEC records like A, AAAA or MX.
  • E. The RRSIG records of the zone.
Reveal Solution  Discussion  0

Correct Answer: B  🗳️

Which command is used to add a temporary audit rule that monitors write access to the
/etc/passwd file?

  • A. ausearch -f /etc/passwd
  • B. auditctl -w /etc/passwd -p wa -k passwd_changes
  • C. aureport -f /etc/passwd
  • D. auditd -w /etc/passwd
Reveal Solution  Discussion  0

Correct Answer: B  🗳️

Explanation: Only visible for TrainingDump members. You can sign-up / login (it's free).

What is Linux Malware Detect?

  • A. A tool to detect malware on a Linux system
  • B. A configuration management tool
  • C. A tool to automate host scans
  • D. A package management tool
Reveal Solution  Discussion  0

Correct Answer: A  🗳️

What is the purpose of an access control list in Linux?

  • A. To mark a file as executable
  • B. To specify fine-grained permissions for users and groups
  • C. To encrypt a file for secure transmission
  • D. To compress a file to save disk space
Reveal Solution  Discussion  0

Correct Answer: B  🗳️

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