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Unbound is designed as a set of modular components that incorporate modern features, such as enhanced security validation, Internet Protocol Version 6 (IPv6), and a client resolver application programming interface library as an integral part of the architecture.
Since DNSSEC provides authenticated denial of existence (allows a resolver to validate that a certain domain name does not exist), DANE enables an incremental transition to verified, encrypted SMTP without any other external mechanisms, as described by RFC 7672. A DANE record indicates that the sender must use TLS.
Contains the DNSSEC signature for a record set. DNS resolvers verify the signature with a public key, stored in a DNSKEY record. DNSKEY Contains the public key that a DNS resolver uses to verify DNSSEC signatures in RRSIG records. DS (delegation signer) Holds the name of a delegated zone. References a DNSKEY record in the sub-delegated zone.
It is a free software product and is distributed with most Unix and Linux platforms, where it is most often also referred to as named (name daemon). It is the most widely deployed DNS server. [ 1 ] Historically, BIND underwent three major revisions, each with significantly different architectures: BIND4, BIND8, and BIND9.
nsupdate is a computer network maintenance utility used by network administrators to instruct the name server of a DNS zone to update its database. The name server might be local to a domain or, with appropriate authentication and permission provided by DNSSEC, an internet name server.
OpenDNSSEC was created as an open-source turn-key solution for DNSSEC. It secures DNS zone data just before it is published in an authoritative name server . OpenDNSSEC takes in unsigned zones, adds digital signatures and other records for DNSSEC and passes it on to the authoritative name servers for that zone.
As a result, a number of alternatives and extensions have been proposed. RFC 2137 specifies an update method using a public key "SIG" DNS record. A client holding the corresponding private key can sign the update request. This method matches the DNSSEC method for secure queries. However, this method is deprecated by RFC 3007.
The PowerDNS Authoritative Server supports DNSSEC as of version 3.0. While pre-signed zones can be served, it is also possible to perform online signing & key management. This has the upside of being relatively easy, but the downside that the cryptographic keying material is present on the servers itself (which is also true of any HTTPS server when not used with a HSM for examp