I use Solarwinds Orion on a daily basis. I have been trying to add LDAP or RADIUS authentication to as many management systems as possible. When I started looking at Orion and RADIUS authentication I found that Solarwinds has not included that yet. However, there is good news! You can get automatic login to happen using pass through authentication. Here's how:
1. Log on to your Orion webpage as usual.
2. Log on to the server Orion is hosted on.
2a. Go to Start->Run and type in compmgmt.msc . This will open up computer management.
2b. Expand "Services and Applications", then expand "Internet Information Services (IIS) Manager"
2c. Expand "Web Sites" and right click on "SolarWinds NetPerfMon" and go to properties.
2d. Click on the "Directory Security" tab and under "Authentication and access control" click on "Edit"
2e. Uncheck "Enable anonymous access" and check "Integrated Windows authentication"
2f. Now click "OK", "OK"
3. Go back to your Orion web page and click on the "Admin" tab
3a. Under the "Accounts" section click on the "Account Manager" link.
3b. Click on the "Add" button to create a new account.
3c. For user name make sure you enter the domain account you will use for the integrated authentication. Make sure your username follows this format "domain\username". You will also need to enter a dummy password as well. Don't worry this password will not be required when you log in.
3d. Click "Submit" to create the account.
3e. Set your view settings and appropriate access levels. Then click "Submit" again.
4. Test your work. Open your Orion webpage in another browser and see if your current Windows log in gets you to your designated Orion home page without entering a password.