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OpenDNS is an American company providing Domain Name System (DNS) resolution services—with features such as phishing protection, optional content filtering, and DNS lookup in its DNS servers—and a cloud computing security product suite, Umbrella, designed to protect enterprise customers from malware, botnets, phishing, and targeted online attacks.
A Cisco 7301 router and a Juniper M7i, part of the K root-server instance at AMS-IX A root name server is a name server for the root zone of the Domain Name System (DNS) of the Internet . It directly answers requests for records in the root zone and answers other requests by returning a list of the authoritative name servers for the appropriate ...
Knot DNS is a free software authoritative DNS server by CZ.NIC. Knot DNS aims to be a fast, resilient DNS server usable for infrastructure (root and TLD) and DNS hosting services. Knot DNS supports DNSSEC signing and among others hosts root zone (B, K, and L root name servers), several top-level domains.
Cisco Prime Network Registrar (CNR) is a Cisco software product that includes components for Domain Name System (DNS) services, Dynamic Host Configuration Protocol services, Trivial File Transfer Protocol (TFTP) services, and Simple Network Management Protocol functions. CNR provides a regional and local management structure and is supported on ...
Identified Internet Mail" was proposed by Cisco as a signature-based mail authentication standard, [39] [40] while DomainKeys was designed by Yahoo [41] [42] to verify the DNS domain of an e-mail sender and the message integrity. Aspects of DomainKeys, along with parts of Identified Internet Mail, were combined to create DomainKeys Identified ...
Domain Name System blocking, or DNS blocking / filtering, is a strategy for making it difficult for users to locate specific domains or websites on the Internet. It was first introduced in 1997 as a means to block spam email from known malicious IP addresses .
DNS hijacking, DNS poisoning, or DNS redirection is the practice of subverting the resolution of Domain Name System (DNS) queries. [1] This can be achieved by malware that overrides a computer's TCP/IP configuration to point at a rogue DNS server under the control of an attacker, or through modifying the behaviour of a trusted DNS server so that it does not comply with internet standards.
A DNS leak is a security flaw that allows DNS requests to be revealed to ISP DNS servers, despite the use of a VPN service to attempt to conceal them. [1] Although primarily of concern to VPN users, it is also possible to prevent it for proxy and direct internet users.