Norton DNS則是一個基於網域名稱系統（NDS）的安全防衛機制

1. Open the Control Panel from your Start menu.
2. Click Network Connections and choose your current connection.
3. On the General tab of the Connection Status screen, click Properties.
4. On the General tab of Connection Properties, scroll down and select Internet Protocol (TCP/IP), then click Properties.
5. On the General tab of Internet Protocol (TCP/IP) Properties, select Use the following DNS server addresses, then enter the two NortonDNS IP addresses 198.153.192.1 and 198.153.194.1.
6. Click OK until each window is closed. You are now using NortonDNS.

NORTONA DNS防護，DNS改上面那二個ip即可