Public DNS Server Tool is a simple tool that makes it easy to change the DNS server settings for your network card(s) to one of several public DNS services.Using a public DNS service can have several advantages over using your ISP's servers, including faster response times and additional security features.The program includes presets for Google DNS as well as several filtered DNS services (OpenDNS, Norton ConnectSafe, Comodo etc.) that can automatically block adult content and/or known malware sites.Simply select the DNS service you want to use and click a button to apply the settings to the selected network card. You can backup your original settings with the provided backup option.