Using OpenDNS starts by making a configuration change in the DNS settings of a network router, on individual computers, WiFi devices, or on internal DNS servers. Once OpenDNS is configured, administrators set and manage OpenDNS’s advanced features, such as Web content filtering and security, by logging in to their OpenDNS account.
OpenDNS for Home
It is important to understand that OpenDNS advanced settings are applied to a network as a whole rather than individual devices, and that those settings are inherited by all of the computers and devices that connect to that network. By changing filtering settings for your network, you apply those filters to each device on the network that's using OpenDNS.
Configuring OpenDNS means that OpenDNS is being specified as the DNS server for a network, usually in place of the DNS servers provided by an ISP. As the DNS server for a network, OpenDNS receives and answers the Internet DNS requests that originate from the computers and devices connected to that network.
OpenDNS for Business
For Enterprise networks, configuring OpenDNS typically means using OpenDNS as the forwarders of the organization’s internal DNS servers. Since internal DNS server configurations can vary between a single server to multiple servers spread across departments and office locations, specific configurations will vary. By configuring the internal DNS servers to act as forwarders, your company will send public requests to our DNS resolvers and keep requests to your internal domains within your network.
Ultimately, using OpenDNS is accomplished by changing a setting within a router, computer, device, or server; regardless of whether in a home, small business or Enterprise environment, and then customizing filtering and protection settings in your Dashboard.
To get started configuring OpenDNS, read this article: https://support.opendns.com/entries/53936430