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Subject: The mailing list for users of the eduroam Configuration Assistant Tool (CAT)
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- From: Stefan Winter <stefan.winter AT restena.lu>
- To: "Schmid, Martin" <Martin.SCHMID AT hs-esslingen.de>, cat-users AT lists.geant.org
- Subject: Re: [[cat-users]] Admin wird auf cat.eduroam.org als "Unknown User" angezeigt
- Date: Fri, 5 Oct 2018 11:13:49 +0200
- Autocrypt: addr=stefan.winter AT restena.lu; prefer-encrypt=mutual; keydata= xsFNBFIplEwBEADTSz+DS8nio+RSvfSLLfaOnCGi1nqpn8Pb1laVUyEvnAAzZ5jemiS88Gxf iDH6hUGlWzcaW0hCfUHGiohr485adbjxRksPngWgAt/1bRxpifsW3zObFjgog01WWQV5Sihl wc4zr8zvYbFA5BJZ6YdkR9C5J015riv5OS30WTjA65SSXgYrb7zJWPwmegTFwE093uBFvC39 waz3xYpVu5j87nO6w2MVQt/8sY2/2BFPEq+xfOajl18UEwc7w8SCgnZdlVNcmEK4UBvJuwS/ 1lsR2JeQa8Gu1EDxC7PRgMgNXsDSWnnBe9aVmfG54+6ILe1QH2dwk9sPBQT5w2+vjijrb3Dv 9ur+1kN+TNU2XE436jVpnnY/3OsLdix30STQn4Q/XOm7YoVMeDwwviefilRxzK0dXA+wKj92 T68Od82CFxuZqPAgBCVmWfQM91iK9piqFK+QP+R3vF6+NGDBdwbe68iVKs0v5L8XmbxBQndj pmo+lo2asmBR2TAIfZHaKdgtBw13u3GPVVKlg/Mpko8ki9JOSem2aFyi3kQEVKptWgXT3POl 97DWJzsR5VyKz6GOx9kJAEISRyLZwm0wqh8+9LCza5oeIKW381lzq1b9x30vOh8CBSQQJ+cG 9ko0yPHAj7Suw2TmPXx1qMctmE6Ahq82ZW30SljdZby8WQuR2wARAQABzTxTdGVmYW4gV2lu dGVyIChSRVNURU5BIGtleSAyMDEzKykgPHN0ZWZhbi53aW50ZXJAcmVzdGVuYS5sdT7CwXkE EwECACMFAlIplEwCGwMHCwkIBwMCAQYVCAIJCgsEFgIDAQIeAQIXgAAKCRDA3mo1ijncZj7/ D/99hVS+mJr8dSPCaDaUFFxBiT2eI1LoR8VKEerTCRw5BsdL6pN2eRJZ9NmsqWo1ynWVHEzO 91bNZ+oZGgyoNohcBAI7p+r0qUTzkyqwdZO4kMm0pqKoM9xkP3tf2mjGujKjOz4Y7S7wnz2Z FokeUsecoRVJF/++/qHnmeWLn44J1HUKLHYCjMu+QXGOgGXgz024jQ5eUrnPwzNp0Z90AFVH lWC+bymty/ToIUUCQqS5Ff0jzdWLd8U695OG9iGvjBQT1LdEjsfbAwuKV5UcnpxNqUpUwKa5 9hdX5/2cMZP07FI1UXwnBlxa8rJfdb13FLjSKX4vUUHedYUZMjMPgcwl1a+zGE22lHiSQWgP 8QLA/W3BLsi22ERCEPZBfexOeOtaWIItDIz18fIaQoMDoRPshzar0JI2CzLYsyeKySAtYJEH FVoLmMvhkwzBmgqA/BEswUA67CfCr1jFHRXdpmWM7YkyAmMa9q6LwquWKS5+MXlUXe/3oZUc gpw/T9Uuy3Jo3RdS7B3jFcWaVr6KsO/A9u1gr/aYn5M+iJTQSj4vzqtkQaJTpSspRZoKa66H Zt3IwSYiDiYZqtM83ynuj9kjnZzGfnuTaNIi996q6Mptr33mOzIE1wmMqnJYwTr3EcNtf483 q/qrJwh5ES8Q9xY7aat/ZcSl8fKubW4TlfVr8c7BTQRSKZRMARAAvBPpn7FQq7LQ5glohtbL 6XIEo1U4X67S0TzUYieENSWSVYuWYIhCBldmWdmH8Bpj/qHeqdon7v+SLtR4WngzMR9toupK cFfHnbP9kpazTSB2ySHxXWGX1gJOpPXdCcg9iveKBHEsDn00ThTcPsvtXpnnzET16pXIvOXO 0bxTmVZ4INIF1SWgvYma/g8kBbgXLpkj8tOywBqFiiYPEZlDeCxDHiMgUDh6olda9K/0TZFT dMPUgjKuubfAeaDNCOrVt4RjmFOaRLikcZocmgJhm3z/j25x7/mnNu+0di1H/S67YGQJ+pqC FInzIXDx7aRW2+JCiqsY2X3xOPWZZzjyis5SNnfOcPH3gt2hYz1fy+thsBGf4NgCN01JRqIJ 2/MOQCgUdwh+9l8xqaJvCkUHM4hVh4W62MAe1u7UEqQbvvNEqxM5034vcvlE+/LRkrDCspw+ 2YJ9QyroLerVRwW5DVleP8Ifi8VB3yD80nqXYs9aqRy0BkDNIQ43ERhESMt8dJqrNkxgC6pe mZrhNwyDh+hy2kPNGQh/iBpdKuH1o3E24TIZoV2v3YHvzob7aAYHddE/PofAXhJW7I9mAs+H dWDmnI8ckuPDFpFH+Y/BFGvEXgcnJAJ1wEvf+4LuiIi0MHjR4EWFn9vvoFDAIqD10h3FSd3D 59HGtdSsNn4XaCsAEQEAAcLBXwQYAQIACQUCUimUTAIbDAAKCRDA3mo1ijncZhBtEACL036d djc5pFoYIdoUY1vT8SMXJNquewCnL1quDADzqDZFU5GNlQEy10krSfBwlTb9ahTtE0JFrOdZ wUZtoa1Pgfr8nU6KOgrXPHbNjS/9dyc5CwGVVIpOavIm2CsMVDJ9LCF/NT+u/t1k6eGfHhPV l3dUQyDa/lzc1chKUIVQYQkFmr0A/iXP+29lFCaI+IeyU0bSdZhezDwUROn5vEx+fiPZyHDS hCb+BxJv/o2LQp9JHenCiSbO+ioRZdxgbWfoKBuXOfmSStqMWXas/gZ5vS3xq72LNtKPRxgp jX3P8Zml1XDqpcBau7eK75VKE0Yd06YxnUIsbcEzInUc3uzW/u0DFpXYkMJb0XIvJyUt5yYP KfV13N8kSkPi5pLxm8yuftXMzfgeFMR7nafY3glTVj/TxElzg6xeZNqfC2ZjIbBtZg9ylHU8 u8wwB+dX282crs0R3N9A064C71/cXlBqcjzjlKH2NUIWGxr+od3TXFIFjszSU3NgMPKrWNhF LLwS81MpbkOe73s6aDhS8RDyNucoxtKXriLR+4Xiu4+pyj5ukYP1JqpB3ZobY/XZgCnJMye+ 7xeTpIDJ1LPORxM3NNAElyb26lxAK2P+km+EpI0Zzz6rNSCfg5jYQ474+e/GBgaSG4MlaPoZ +XAfN46u1Xjjv1/AkkA4IA6m5zP5og==
- Openpgp: id=AD3091F3AB24E05F4F722C03C0DE6A358A39DC66; url=http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xC0DE6A358A39DC66
Hello,
> darf ich hier bitte die Frage stellen: Warum werde ich als
> Administrator als Unknown User auf cat.eduroam.org geführt werden,
> obwohl unser IdP die vom SP angeforderten Attribute wie display name,
> eduPersonTargetID und email schickt.
For the benefit of the list, I'll answer in English.
eduroam CAT does not perform user authentication on its own, we are
using a proxy that authenticates all eduroam Operations Support
Services, the "eduroam SP Proxy".
That proxy receives your user attributes, including the opaque user
identifier (NameID, or eduPersonTargetedId). The proxy also receives
your real name and any other attributes your IdP sends.
The proxy then chooses which of these supplementary attributes (in
addition to the NameID equivalent) it trusts and stores in its own
session database. The rule on that server is: only manually vetted
information is stored. The effect is that users with the NRO privilege
get their name saved (the name is verified by a human against the
information in the eduroam operations database). For any other user, we
do not have authoritative information on the real names of people, so
the information is considered untrusted and discarded.
I am not exactly a fan of that treatment myself. In its defence though,
there is a reason to be that cautious: amongst others, we allow social
ID providers such as Google as authentication source. Anyone can enter
any information they like about themselves at these sources. So the real
name could be tampered with to "impersonate" (only on visual inspection
of course, since the NameID is different) a NRO admin or anyone else the
user feels like.
Of course one natural way forward would be to consider eduGAIN R&E
institutions(*) as more trusted than anyone else and take their
assertions on the real name as trusted; while still discarding others.
I'm hoping that something along those lines will be implemented in the
eduroam SP proxy at some point - but hoping is all I can do. It's not my
product.
I hope this explains the situation sufficiently.
Greetings,
Stefan Winter
(*) note that I didn't write "eduGAIN" without this qualifier. Some
social providers are actually eduGAIN IdPs. The eduroam SP proxy for
example has the "GitHub via eduTEAMS Identity Hub"; there would also be
a "Google via eduTEAMS Identity Hub" but we have manually removed that
on the SP proxy because it clashes with the "direct" Google login in the
Social tab.
Trusting eduGAIN in its entirety defeats the purpose of excluding
"unvetted social providers".
--
Stefan WINTER
Ingenieur de Recherche
Fondation RESTENA - Réseau Téléinformatique de l'Education Nationale et
de la Recherche
2, avenue de l'Université
L-4365 Esch-sur-Alzette
Tel: +352 424409 1
Fax: +352 422473
PGP key updated to 4096 Bit RSA - I will encrypt all mails if the
recipient's key is known to me
http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xC0DE6A358A39DC66
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- [[cat-users]] Admin wird auf cat.eduroam.org als "Unknown User" angezeigt, Schmid, Martin, 10/05/2018
- Re: [[cat-users]] Admin wird auf cat.eduroam.org als "Unknown User" angezeigt, Stefan Winter, 10/05/2018
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