DNS Redirector - protecting networks everywhere for over 18 years!    
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 Internet Filter
Originally designed for wireless hotspots in hotels, cafes, schools and libraries; DNS Redirector quickly became an accepted solution for Internet filtering all on its own. Today large enterprise customers are leveraging DNS Redirector for Internet filtering at a fraction of the cost. DNS based filtering works for any protocol (http, https, ftp, mms) and not just web surfing in a browser but for any software that does a DNS lookup to communicate (IM, email, video conferencing/streaming, even viruses and malware).
With DNS Redirector you don't have to install or modify each workstation and there's nothing for users to disable. Works with any TCP/IP client device, providing the freedom to use whatever wireless access points, switches, or routers that you want. The software can be configured to log referring IP, date and time, attempted visits to blocked sites, or all DNS lookups. Forwards all allowed DNS queries on to your internal DNS server(s), your ISP, or Google DNS / Norton DNS / OpenDNS.
DNS Redirector runs on a Windows server within your LAN (even on an existing domain controller). Block sites based on categories, your own custom keywords, or any domains you wish to deny or allow. Prevent installation of file sharing/P2P clients, spyware, other malicious software, and phishing attempts - a technique referred to as DNS sinkhole or blacklist. Save bandwidth by blocking streaming audio/video, large downloads, or questionable material. Restrict online games, IM, pornography, and illegal content. Or choose to block everything and allow only the sites you specify - known as DNS whitelist.
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