The privacy policy of Google DNS seems to be somewhat more benign, but again, you should judge for yourself. Read the privacy policy carefully and draw your own conclusions. t is disclosed to entities that perform marketing services on our behalf or to other entities with whom we have joint marketing agreements. When you use our Services, OpenDNS stores certain DNS, IP address and related information about you to improve the quality of our Service, to provide you with Services and for internal business and analysis purposes.Ĭoncerning personal information, the policy states: OpenDNS will know, and store, the address of every Internet server you use from now on. The problem may be resolved automatically within a matter of hours. If you need to switch DNS providers because of a misconfiguration of your ISP's servers, the change will most likely only need to be temporary. The article suggests testing OpenDNS, Google DNS, or another third-party DNS service as a possible way to overcome the problem. The 'prefetching' performed by modern web browsers, including Safari, may confuse some DNS servers, with the effects described in this Apple Support article. There is one exception to the rule that OpenDNS and Google DNS don't improve performance. Here is an example of an ASC user who had undesirable results from OpenDNS content filtering. Nevertheless, you may find those control features useful, despite their limitations. It's just as easy to evade the parental controls offered by OpenDNS. It's trivial for a malware attacker to evade such controls. All it can do is to selectively refuse to answer queries. A DNS service does not and cannot block anything.

The claims on the OpenDNS website that it 'blocks' malware attacks such as Flashback are false advertising.

I don't know of any large ISP that is currently doing this, but if yours is, you won't be able to use a public DNS service, even if you change the network settings on your computer or router. Some ISP's have been known to 'hijack' DNS queries to their own server, irrespective of where those queries are directed. Invalid queries to ad sites, in violation of published standards for DNS. Note that your ISP may, and OpenDNS certainly will, redirect If you're persistenly getting false results from name resolution, there is some other reason for it. Ethical ISP's do not intentionally redirect valid DNS queries, though it might happen because of a misconfiguration for example, because the address of a network host has recently changed, or because of a ' Another reason often given for using public DNS is to avoid 'redirection,' that is, false results from a query for a valid domain name.

Apple os x server dns parental controls