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Registrants publish a "CAA" Domain Name System (DNS) resource record which compliant certificate authorities check for before issuing digital certificates. CAA was drafted by computer scientists Phillip Hallam-Baker and Rob Stradling in response to increasing concerns about the security of publicly trusted certificate authorities.
A domain validated certificate (DV) is an X.509 public key certificate typically used for Transport Layer Security (TLS) where the domain name of the applicant is validated by proving some control over a DNS domain. [1] Domain validated certificates were first distributed by GeoTrust in 2002 before becoming a widely accepted method. [2]
In computer networks, a reverse DNS lookup or reverse DNS resolution (rDNS) is the querying technique of the Domain Name System (DNS) to determine the domain name associated with an IP address – the reverse of the usual "forward" DNS lookup of an IP address from a domain name. [1]
This list of DNS record types is an overview of resource records (RRs) permissible in zone files of the Domain Name System ... DNSSEC Lookaside Validation record:
DNS resolvers use NSEC records to verify the non-existence of a record name and type as part of DNSSEC validation. NSEC3 (next secure record version 3) Contains links to the next record name in the zone (in hashed name sorting order) and lists the record types that exist for the name covered by the hash value in the first label of the NSEC3 ...
Domain validation suffers from certain structural security limitations. In particular, it is always vulnerable to attacks that allow an adversary to observe the domain validation probes that CAs send. These can include attacks against the DNS, TCP, or BGP protocols (which lack the cryptographic protections of TLS/SSL), or the compromise of routers.
A wildcard DNS record is a record in a DNS zone that will match requests for non-existent domain names. A wildcard DNS record is specified by using a * as the leftmost label (part) of a domain name, e.g. *.example.com. The exact rules for when a wildcard will match are specified in RFC 1034, but the rules are neither intuitive nor clearly ...
The basic idea is to have the client query the DNS for a specific SRV record. For example, if an SRV-aware LDAP client wants to discover an LDAP server for a certain domain, it performs a DNS lookup for _ldap._tcp.example.com (the _tcp means the client requesting a TCP enabled LDAP server). The returned record contains information on the ...