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An example of a captive web portal used to log onto a restricted network. A captive portal is a web page accessed with a web browser that is displayed to newly connected users of a Wi-Fi or wired network before they are granted broader access to network resources.
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.
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.
OpenDNSSEC is a computer program that manages the security of domain names on the Internet. The project intends to drive adoption of Domain Name System Security Extensions (DNSSEC) to further enhance Internet security.
The WiFiDog authentication server is a PHP and PostgreSQL or MySQL server based solution written to authenticate clients in a captive portal environment. WiFiDog Auth provides portal specific content management, allows users to create wireless internet access accounts using email access, provides gateway uptime statistics and connection specific and user log statistics.
David A. Ulevitch (born December 10, 1981) is an American entrepreneur and venture capitalist.He was the founder and CEO of the enterprise security company OpenDNS (acquired by Cisco) and founder of EveryDNS (acquired by Dyn).
Note that some OS's include automatica captive portal detection and bring a window with the captive portal page contents for you to login with. Once you've either logged in or agreed to a TOS agreement then your allowed o freely access the internet, either indefinitely or in some cases for a set period of time such as couple hours.
A public recursive name server (also called public DNS resolver) is a name server service that networked computers may use to query the Domain Name System (DNS), the decentralized Internet naming system, in place of (or in addition to) name servers operated by the local Internet service provider (ISP) to which the devices are connected.