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Kemp | Glossary of Terms and Phrases

Service Principal Name (SPN)

Assigned to user or computer accounts in AD, SPNs define what services run under the account’s security context. When SQL Server Service is using a Service Account instead of the default “LocalSystem”, an example SPN delegated to the account would be: MSSQLSvc/sqlsrvr.exampledomain.com:1433. When an IIS Web Application Pool is running as a specified user account rather than as the default of “Network Service”, an example SPN delegated to the account would be: http/websrvr.exampledomain.com.
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