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Re: [[cat-users]] CAT uses .cz instead of .eu in inner authentication

From: Stefan Winter <stefan.winter AT restena.lu>
To: Jan Tomasek <jan.tomasek AT cesnet.cz>, cat-users AT lists.geant.org
Subject: Re: [[cat-users]] CAT uses .cz instead of .eu in inner authentication
Date: Fri, 26 Oct 2018 15:51:43 +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,

according to the screenshot you have entered the .eu variant as inner
ID. So we send that one inside the tunnel. I don't think you think there
is anything wrong with that?

Is your issue that you enter the .eu domain also for the *outer* ID, but
that one is not used, with the .cz variant used instead?

Greetings,

Stefan Winter

Am 26.10.18 um 15:27 schrieb Jan Tomasek:
> Hello,
>
> I wanted to use CAT as entry point for testing our cesnet.eu domain. But
> despite what I write as inner user name, it forces cesnet.eu. Logs on
> our RADIUS server:
>
> Fri Oct 26 15:11:11 2018: DEBUG: EAP TTLS inner authentication request
> for semik AT cesnet.eu
> Fri Oct 26 15:11:11 2018: DEBUG: TTLS Tunnelled Diameter Packet dump:
> Code:       Access-Request
> Identifier: UNDEF
> Authentic: <8><207><254>IC|<249><160><10><208><133><205>Vz<209>L
> Attributes:
>         User-Name = "semik AT cesnet.eu"
>         MS-CHAP-Challenge = <162>4X`<194>K:N<9><251>:<197>Qwp<133>
>         MS-CHAP2-Response =
> w<0><15>lcA<191><231>R3x.<172>H<226>#<168>s<0><0><0><0><0><0><0><0><188>E<154><201><19><8><229>:<169><186><178><132><182>AH<213><191>w<218>r<137>)\<186>
>
>
>
> Fri Oct 26 15:11:11 2018: DEBUG: User semik AT cesnet.cz/semik AT cesnet.eu is
> trying cheat.
>
> That debug message is thrown by code comparing inner EAP identity
> (first) and external identity (second).
>
>
> I'm not sure if this is a bug or intentional feature. I want just to
> inform if it is a bug.
>
> Best regards

--
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

Attachment: 0xC0DE6A358A39DC66.asc
Description: application/pgp-keys

Attachment: signature.asc
Description: OpenPGP digital signature

[[cat-users]] CAT uses .cz instead of .eu in inner authentication, Jan Tomasek, 10/26/2018
- Re: [[cat-users]] CAT uses .cz instead of .eu in inner authentication, Stefan Winter, 10/26/2018
  - Re: [[cat-users]] CAT uses .cz instead of .eu in inner authentication, Jan Tomasek, 10/27/2018
    - Re: [[cat-users]] CAT uses .cz instead of .eu in inner authentication, Stefan Winter, 10/29/2018