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Networking Intermediate

What is DNS Record Types?

Different types of DNS entries that map domain names to various information like IP addresses, mail servers, and verification strings.

DNS record types serve different purposes. A records map domains to IPv4 addresses. AAAA records map to IPv6. CNAME creates domain aliases. MX directs email to mail servers. TXT stores text data for verification and SPF/DKIM email authentication.

NS records specify authoritative nameservers. SOA defines zone authority and timing parameters. SRV records specify service locations. CAA records control which CAs can issue certificates. PTR records enable reverse DNS lookups.

Related Terms

IP Address
A unique numerical label assigned to each device on a computer network for identification and communication.
Content Delivery Network (CDN)
A geographically distributed network of servers that caches and delivers web content from locations closest to users for faster load times.
Network ACL
A set of rules that control inbound and outbound traffic at the subnet level, acting as a stateless firewall in cloud and enterprise networks.
HTTPS Everywhere
The practice of securing all web traffic with TLS encryption, ensuring data integrity and privacy between browsers and servers.
ARP (Address Resolution Protocol)
A protocol that maps IP addresses to physical MAC addresses on a local network segment.
Firewall
A network security system that monitors and controls incoming and outgoing traffic based on predetermined rules.
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