Note: To add the IAS server to a domain:. 1 Log on to the server using domain administrator credentials.2 Click Start, point to Programs, point to Administrative Tools, and then click ActiveDirectory Users and Computers.3 In the console.. . tree, select Users.4 In the details pane, right-click RAS and IAS Servers, and then click Properties.5 In the RAS and IAS Servers Properties dialog box, on the Members tab, add each ofthe IAS servers.Reference.: Windows 2000 Server Resource Kit, Internet Authentication Service, Troubleshooting IasInstallation