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Lpi 303-300 Exam Syllabus Topics:

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

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

1. Which command displays the capabilities currently assigned to a specific binary file?

A) getcap /path/to/binary
B) setcap /path/to/binary
C) chmod +cap /path/to/binary
D) capsh --print


2. Which of the following openssl commands generates a certificate signing request (CSR) using the already existing private key contained in the file private/ keypair.pem?

A) openssl gencsr -key private/keypair.pem -out req/csr.pem
B) openssl req -key private/keypair.pem -out req/csr.pem
C) openssl req - new -key private/keypair.pem -out req/csr.pem
D) openssl gencsr -new- key private/keypair.pem -out req/csr.pem


3. What is the purpose of Linux capabilities, as introduced to divide the traditional all-or-nothing root privilege model?

A) They allow specific, granular privileges (such as binding to low-numbered ports) to be granted to a process without granting full root access.
B) They are used only within containerized environments.
C) They replace the need for the setuid bit entirely on all binaries.
D) They control network bandwidth allocation per process.


4. What is the primary purpose of Online Certificate Status Protocol (OCSP)?

A) To distribute the full Certificate Revocation List to all clients.
B) To generate new X.509 certificates automatically.
C) To allow a client to check the revocation status of a specific X.509 certificate in real time.
D) To encrypt data in transit between a client and server.


5. An X509 certificate contains the following information:
X509v3 Basic Constraints: critical CA:TRUE, pathlen:0
Which of the following statements are true regarding the certificate? (Choose THREE correct answers.)

A) This certificate may never be used to sign any other certificates.
B) This certificate may be used to sign certificates of subordinate certification authorities.
C) This certificate may be used to sign certificates that are not also a certification authority.
D) This certificate will not be accepted by programs that do not understand the listed extension.
E) This certificate belongs to a certification authority.


Solutions:

Question # 1
Answer: A
Question # 2
Answer: C
Question # 3
Answer: A
Question # 4
Answer: C
Question # 5
Answer: B,C,E

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