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Lpi 303-300 Exam Syllabus Topics:

Section	Weight	Objectives
Access Control	8%	- Authentication and Authorization 1. Multi-factor authentication 2. Centralized authentication 3. PAM - Discretionary Access Control 1. Extended attributes 2. POSIX ACLs 3. File permissions - Mandatory Access Control 1. AppArmor configuration 2. SELinux management 3. Policy enforcement
Cryptography	8%	- OpenPGP 1. Sign and encrypt data 2. Manage GnuPG keys 3. Web of trust concepts - X.509 Certificates and Public Key Infrastructures 1. Certificate revocation and validation 2. Create and manage certificates 3. Manage certificate authorities - Data Encryption 1. Encrypt files and storage devices 2. Secure data transmission 3. Use LUKS and dm-crypt
Host Security	9%	- Resource Control 1. Process resource management 2. cgroups 3. ulimits - Host Intrusion Detection 1. Rootkit detection tools 2. AIDE integrity checking 3. Malware detection 4. Linux Audit system - Host Hardening 1. Service hardening 2. Secure boot process 3. Kernel runtime protection
Network Security	12%	- Virtual Private Networks 1. IPsec and strongSwan 2. WireGuard 3. OpenVPN - Network Intrusion Detection 1. tcpdump 2. Wireshark 3. Snort 4. Kismet - Network Hardening 1. TCP wrappers and service restrictions 2. Secure network services - Packet Filtering 1. NAT and connection tracking 2. IP sets 3. iptables and ip6tables 4. nftables awareness
Threats and Vulnerability Assessment	3%	- Threat Analysis 1. Network threats 2. Credential and confidentiality threats 3. Host-based threats 4. Application threats - Vulnerability Assessment 1. Risk identification 2. OpenVAS 3. Security scanning

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Lpi LPIC Exam 303: Security, version 3.0 Sample Questions (Q132-Q137):

NEW QUESTION # 132
Which PAM module can be used to restrict login access based on the combination of user, origin, and service?

A. pam_access
B. pam_limits
C. pam_nologin
D. pam_selinux

Answer: A

Explanation:
The pam_access module enforces login restrictions defined in the access.conf configuration file, which specifies rules based on combinations of users or groups, the origin (such as a hostname, IP address, or tty), and often the PAM service being used. This allows administrators to build fine- grained login policies, such as allowing a particular user to log in only from specific hosts.
pam_nologin instead simply prevents all non-root logins when the /etc/nologin file is present.

NEW QUESTION # 133
Which of the following expressions are valid AIDE rules?
(Choose TWO correct answers.)

A. #/bin/
B. /usr=all
C. !/var/run/.*
D. append: /var/log/*
E. /etc p+i+u+g

Answer: C,E

NEW QUESTION # 134
Which of the following statements describes the purpose of ndpmon?

A. It monitors the availability of a network link by querying network interfaces.
B. It monitors log files for failed login attempts in order to block traffic from offending network nodes.
C. It monitors the network for neighbor discovery messages from new IPv6 hosts and routers.
D. It monitors remote hosts by periodically sending echo requests to them.
E. It monitors the network for IPv4 nodes that have not yet migrated to IPv6.

Answer: C

NEW QUESTION # 135
What is the purpose of a TLSA record in DANE?

A. To authenticate a DNS server
B. To sign a TLS server's public key
C. To map a domain name to an IP address
D. To provide information about a TLS server

Answer: B

NEW QUESTION # 136
Which of the following commands defines an audit rule that monitors read and write operations to the file/ etc/firewall/rules and associates the rule with the name firewall?

A. echo "n: firewall r:/etc/firewall/rules: w:/etc/firewall/rules:" | auditctl ~
B. auditctl -N firewall -r r: /etc/firewall/rules -r w: etc/firewall/rules
C. auditctl -w /etc/firewall/rules -p rw -k firewall
D. auditctl -A -f /etc/firewall/rules -o r -o w -l firewall
E. auditctl --read /etc/firewall/rules --write /etc/firewall/rules --label firewall

Answer: C

NEW QUESTION # 137
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