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Lpi 303-300 Exam Syllabus Topics:

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

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

Which of the following statements is true regarding eCryptfs?

  • A. For every file in an eCryptfs directory there exists a corresponding file that contains the encrypted content.
  • B. After unmounting an eCryptfs directory, the directory hierarchy and the original file names are still visible, although, it is not possible to view the contents of the files.
  • C. The content of all files in an eCryptfs directory is stored in an archive file similar to a tar file with an additional index to improve performance.
  • D. When a user changes his login password, the contents of his eCryptfs home directory has to be re- encrypted using his new login password.
  • E. eCryptfs cannot be used to encrypt only directories that are the home directory of a regular Linux user.
Reveal Solution  Discussion  0

Correct Answer: E  🗳️

Which Linux kernel feature restricts a process's access to a subset of system calls, commonly used by container runtimes and sandboxing tools to reduce attack surface?

  • A. seccomp
  • B. capabilities
  • C. cgroups
  • D. namespaces
Reveal Solution  Discussion  0

Correct Answer: A  🗳️

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What is the purpose of a LUKS key slot?

  • A. It defines the filesystem type used on the encrypted volume.
  • B. It stores the device's UUID.
  • C. It stores a copy of the encrypted data for redundancy.
  • D. It stores an encrypted copy of the master key, protected by a specific passphrase or keyfile, allowing multiple independent unlock methods.
Reveal Solution  Discussion  0

Correct Answer: D  🗳️

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What is the purpose of the GnuPG "trust level" assigned to a key, as opposed to a signature on that key?

  • A. It indicates how much the owner trusts that key's holder to properly verify and sign other people's keys.
  • B. It indicates how strongly the key's authenticity has been verified.
  • C. It determines the key's expiration date.
  • D. It is identical in meaning to a key signature and is redundant.
Reveal Solution  Discussion  0

Correct Answer: A  🗳️

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What is a buffer overflow?

  • A. A type of software vulnerability
  • B. A type of denial-of-service attack
  • C. A type of malware that disguises itself as legitimate software
  • D. A type of virus
Reveal Solution  Discussion  0

Correct Answer: A  🗳️

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