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The Domain Name System Security Extensions (DNSSEC) attempts to add security, while maintaining backward compatibility.RFC 3833 documents some of the known threats to the DNS and how DNSSEC responds to those threats.The expressions "$" and "$" are replaced with "value" when "$name" is empty. Remember that the Internet (or any network for that matter) works by allocating every point (host, server, router, interface etc.) a physical IP address (which may be locally unique or globally unique).
The Domain Name System Security Extensions (DNSSEC) is a suite of Internet Engineering Task Force (IETF) specifications for securing certain kinds of information provided by the Domain Name System (DNS) as used on Internet Protocol (IP) networks.
Windows 2003 and Windows Server 2008 store zone information in either the Domain DNSZones or Forest DNSZones of an application directory partition.
The Postfix configuration file specifies a very small subset of all the parameters that control the operation of the Postfix mail system.
While protecting IP addresses is the immediate concern for many users, DNSSEC can protect any data published in the DNS, including text records (TXT), mail exchange records (MX), and can be used to bootstrap other security systems that publish references to cryptographic certificates stored in the DNS such as Certificate Records (CERT records, RFC 4398), SSH fingerprints (SSHFP, RFC 4255), IPSec public keys (IPSECKEY, RFC 4025), and TLS Trust Anchors (TLSA, RFC 6698).
When you use Active Directory (AD)–integrated DNS servers and zones on Windows Server 2003 and later, an individual DNS zone's data can be stored in one of three locations in Active Directory.
DNSSEC was designed to protect applications (and caching resolvers serving those applications) from using forged or manipulated DNS data, such as that created by DNS cache poisoning.