Introduction to Web Content Filtering and Security
The advanced features of OpenDNS, such as Web content filtering and security, are set and managed online by a user with OpenDNS administrative privileges (an OpenDNS Administrator).
It is important to understand that OpenDNS advanced-feature settings are applied to a network and those settings are subsequently inherited by all of the computers and devices that connect to that network.
Some OpenDNS security features become effective as soon as OpenDNS is configured as the DNS server for a network. For example, all OpenDNS solutions block end-users from navigating to known phishing and Conficker Command and Control Callback websites.
OpenDNS solutions such as FamilyShield use additional filtering features managed by OpenDNS, which makes FamilyShield the fastest and easiest way to protect children from adult content on the Internet.
OpenDNS Administrators can specify Web content filtering and set custom security features in OpenDNS Basic, VIP, School, and Enterprise solutions. Adjusting these features is enabled only within an OpenDNS account, which are used to create and manage networks.
Once Web content filtering and security settings are saved, they are applied to devices and computers when they connect to a configured network.
Example of OpenDNS Filtering
How OpenDNS Knows When and What to Filter
Some OpenDNS solutions, such as Basic, VIP and Enterprise, allow OpenDNS Administrators to configure comprehensive Web content filtering, which limits the Internet to only Web content that is not filtered for that network.
Other OpenDNS solutions, such as FamilyShield, use preconfigured Web content filtering to block specific categories of websites. These settings are managed by OpenDNS and combine our proprietary algorithms with direct input from OpenDNS Community members.
To adjust Web content filtering on a network, OpenDNS Administrators must log in to the OpenDNS Dashboard. Under Settings for: select the network to be adjusted (you must have appropriate permissions for that network) and click on the Web Content Filtering link. Choose the filtering levels or specific categories and click Apply.
Settings made to one network can be applied to all networks if multiple networks exist. Once you apply the new settings, it may take up to 3 minutes before they are in effect on all OpenDNS global servers.
After you make Web content filtering changes, OpenDNS recommends that you clear the local DNS cache to ensure that new settings are made effective. To do this, see Clearing the DNS Cache.
Web content filtering can be applied to networks in several ways, each of which are explained in the following topics:
Preconfigured Web Content Filtering (Non-Adjustable)
OpenDNS solutions such as FamilyShield use preconfigured Web content filtering and blocking that is not adjustable. OpenDNS’s preconfigured solutions provide easy-to-implement protection for networks where manual configuration is not desired. To use a preconfigured OpenDNS solution, set your DNS parameters to the appropriate IP address.