Bug 55580 – Windows radius login option "Automatically use my Windows logon name and password (and domain if any)" not supported

Bug 55580 - Windows radius login option "Automatically use my Windows logon name and password (and domain if any)" not supported


Summary:	Windows radius login option "Automatically use my Windows logon name and pass...

Status:	NEW

Product:	UCS
Classification:	Unclassified
Component:	Radius
Version:	UCS 5.0
Hardware:	Other Linux

Importance:	P5 normal (vote)
Target Milestone:	---
Assigned To:	UCS maintainers
QA Contact:	UCS maintainers

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Reported:	2023-01-18 16:27 CET by Jürn Brodersen
Modified:	2023-01-18 17:18 CET (History)
CC List:	0 users

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What kind of report is it?:	Bug Report
What type of bug is this?:	4: Minor Usability: Impairs usability in secondary scenarios
Who will be affected by this bug?:	1: Will affect a very few installed domains
How will those affected feel about the bug?:	2: A Pain – users won’t like this once they notice it
User Pain:	0.046
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Description Jürn Brodersen

2023-01-18 16:27:17 CET

Windows radius login option "Automatically use my Windows logon name and password (and domain if any)" not supported.

Windows can be set up to automatically use the login credentials to login to a wifi network [1]. This fails on UCS systems because Windows adds the domain (or the hostname on unjoined systems) to the username. E.g. "DOMAIN\mustermann".

We need to remove the doamin part or other wise we don't find the user in the ldap.

We already have something similar for computer accounts:
https://git.knut.univention.de/univention/ucs/-/blob/5.0-2/services/univention-radius/modules/univention/radius/utils.py#L43

If you implemented this feature, please check these scenarios (I'm not sure how Windows handles them):

- Unjoined system
- Joined system -> login using SAM account format like "DOMAIN\mustermann"
- Joined system -> login using UPN account format like "mustermann@my.domain"

TBD:
Do we just want to remove the domain part or do we want to check it against the UCS domain?

[1] https://social.technet.microsoft.com/Forums/windows/en-US/257fbbd4-f8e6-44a5-a40a-6780e7115531/8021x-authentication-client-sends-username-as-pcnameusername?forum=winserverNAP