[cifs-protocol] [EXTERNAL] MS-PAC: Constrained Delegation Information - TrackingID#2111290040007908

Jeff McCashland (He/him) jeffm at microsoft.com
Fri Dec 10 17:58:52 UTC 2021

Thanks for letting me know!

Best regards,
Jeff McCashland (He/him) | Senior Escalation Engineer | Microsoft Protocol Open Specifications Team 
Phone: +1 (425) 703-8300 x38300 | Hours: 9am-5pm | Time zone: (UTC-08:00) Pacific Time (US and Canada)
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-----Original Message-----
From: Andreas Schneider <asn at samba.org> 
Sent: Friday, December 10, 2021 2:26 AM
To: Jeff McCashland (He/him) <jeffm at microsoft.com>
Cc: cifs-protocol at lists.samba.org; Jeff McCashland <jeffm at microsoftsupport.com>
Subject: Re: [EXTERNAL] MS-PAC: Constrained Delegation Information - TrackingID#2111290040007908

On Wednesday, December 8, 2021 5:29:40 PM CET Jeff McCashland (He/him) wrote:
> Hi Andreas,

Hi Jeff,
> I have done some digging into this, and also discussed it with our PAC team.
> It does not appear that there are any undocumented constraints on 
> these values. There are no formatting requirements at all for 
> S4UTransitedServices, which are just used for auditing. 
> S4U2proxyTarget can be any valid format for a security principal, but 
> the caller should be consistent in the form used for each step. It 
> doesn't necessarily need to be an SPN.
> Please let me know if this does not fully resolve your issue.

This resolves my issue. Thank you very much!


Andreas Schneider                      asn at samba.org
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