Lpi 303-300 : LPIC Exam 303: Security, version 3.0

  • Exam Code: 303-300
  • Exam Name: LPIC Exam 303: Security, version 3.0
  • Updated: Oct 02, 2026

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Lpi 303-300 Exam Syllabus Topics:

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

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

Question #1

Which file is used to configure rkhunter?

  • A. /etc/maldet.conf
  • B. /etc/aide/aide.conf
  • C. /etc/rkhunter.conf
  • D. /etc/audit/auditd.conf
Reveal Solution  Discussion  0

Correct Answer: C  🗳️

Question #2

In which path is the data, which can be altered by the sysctl command, accessible?

  • A. /sys/
  • B. /sysctl/
  • C. /dev/sys/
  • D. /proc/sys/
Reveal Solution  Discussion  0

Correct Answer: D  🗳️

Question #3

How are SELinux permissions related to standard Linux permissions? (Choose TWO correct answers.)

  • A. Standard Linux permissions override SELinux permissions.
  • B. SELinux permissions are verified before standard Linux permissions.
  • C. SELinux permissions override standard Linux permissions.
  • D. SELinux permissions are verified after standard Linux permissions.
Reveal Solution  Discussion  0

Correct Answer: A,D  🗳️

Question #4

Which command displays currently listening TCP and UDP sockets along with the process ID and name of the associated program?

  • A. traceroute
  • B. ping -c 4
  • C. ss -tulnp
  • D. dig
Reveal Solution  Discussion  0

Correct Answer: C  🗳️

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

Question #5

Which PAM module checks new passwords against dictionary words and enforces complexity?
(Specially the module name only without any path.)
Solution: pam_cracklib
Determine whether the given solution is correct?

  • A. Correct
  • B. Incorrect
Reveal Solution  Discussion  0

Correct Answer: A  🗳️

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