SPN means "Service Principal Name". In Active Directory you can set an SPN with the command line tool SETSPN. Find below some usage examples which I use often:
- setspn -Q http/www.mywebsite.com ==> Check if the SPN "http/www.mywebsite.com" exists
- setspn -L MyServer ==> Show all SPNs for MyServer
- setspn -X ==> Search for duplicate SPNs in the current domain
- setspn -S http/www.mywebsite.com MyServer ==> Set the SPN for a specific Server object in AD. This also checks for duplicate SPNs
SPNs can also be viewed and edited in AD Attribute Editor under the attribute
of an AD object.