DNS and Network Security Questions

DNS and DNSSEC

• DNS records: RRSIG, NSEC, NSEC3, DS, PTR, and A records are used for different purposes in DNS.
• PTR records are used to map an IP address to a hostname.
• DNSKEY records are used to sign a DNS zone in DNSSEC.

Security Threats

• Phishing is a type of social engineering attack that targets a specific user or organization to steal sensitive information.
• Social engineering attacks aim to steal sensitive information by exploiting human psychology.

System Security

• Host intrusion detection (HID) is a system that monitors and detects potential security threats on a single computer or server.
• AIDE (Advanced Intrusion Detection Environment) is a tool that detects intrusions and system changes.

Password Management

• pam_cracklib is a PAM module that checks new passwords against dictionary words and enforces complexity.

Network Security

• TSIG is used to sign DNS messages for secure communication in DNS.
• IP sets group together IP addresses that can be referenced by netfilter rules.
• iptables is a command used to configure firewall rules in Linux.

Linux System Management

• Extended attributes in Linux are used to store additional metadata about a file.
• rkhunter is a tool that scans for rootkits and other malicious software, and is configured using the /etc/rkhunter.conf file.

Networking and Firewall Configuration

• setkey is a command used to configure IPsec policies and create new SPD entries.
• Snort is a network intrusion detection system that can be configured using rules files.

User Management

• SSSD (System Security Services Daemon) is a service that provides access to remote directories and authentication mechanisms.

Certificates and Encryption

• A Certificate Revocation List (CRL) is a list of X.509 certificates that have been revoked by a Certification Authority (CA).
• A CA is an entity that issues and signs X.509 certificates.
• OpenVPN is a VPN solution that uses X.509 certificates for authentication and encryption.

Kerberos Configuration

• The krb5.conf file is used to configure Kerberos settings, and allows sections such as [plugins], [domain], [capaths], and [realms].
• The push directive is used in OpenVPN server configuration to send network configuration information to the client.

Test your knowledge of DNS records and network security concepts with these challenging questions. Covering topics such as RRSIG, NSEC, and host intrusion detection, this quiz is perfect for IT professionals and students.