Kerberos Tips

byAlex R. •September 12, 2023

Get available tokens

klist

Get a token for SPN

klist get http/server.domain.co.il

To enable kerberos events logging, add LogLevel = 1 to:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa\Kerberos\Parameters

The event logs should appear under System Events in the event viewer

Purge all tickets for local system:

klist purge -li 0x3e7

Configure IIS to work with "Active Directory Client Certificate Authentication"

This method of authentication maps a certificate to an active directory account, for this to work, make sure to follow these steps:

Enroll a certificate for a domain user account where the certificate is either published to the user account in AD or has the UPN set correctly.
Set the option in IIS:
Ensure the application pool runs under "Local System" account and not NetworkService, LocalService or any other.
Setup delegation and ensure SPN with FQDN to any service such as SQL Server. E.g.:

Tags Kerberos

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Kerberos Tips

Configure IIS to work with "Active Directory Client Certificate Authentication"

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