ADFS Shibboleth question

Aaron Howell aaron.howell at
Thu Apr 3 17:52:22 EDT 2014

>> I thought I recently read that Microsoft was supporting SAML / Shibboleth
>> for O365. Maybe you can just do this and be done with it, without needing
>> ADFS at all?
Microsoft announced their intention to support Shibboleth fully in the future recently. However I don’t believe they have actually done it yet.

There are instruction here for authenticating ADFS (v3 on 2012r2) using Shibboleth IdP:

I don’t think this would be affected if Shibboleth IdP is authenticating with CAS. However I haven’t tested it - but I am planning on making our CAS authenticate using Shibboleth IdP soon which would fundamentally achieve the same outcome of Single SSO:


On 4 Apr 2014, at 2:54 am, Qian, Yi <yqian at> wrote:

> The people who love ADFS at the university must be very disappointed,
> Thanks Scott for the help
> On 4/3/14 10:20 AM, "Cantor, Scott" <cantor.2 at> wrote:
>> On 4/3/14, 11:06 AM, "Qian, Yi" <yqian at> wrote:
>>> After ADFS set up, we will have 2 IdPs, Shibboleth IdP and ADFS IdP,
>>> Shib IdP will use CAS authentication against sun/oracle LDAP, ADFS will
>>> authenticate against AD.
>>> The requirement at the university is user can authenticate against either
>>> of the IdP and does not require login again
>> You cannot meet that requirement with the above choices.
>>> The puzzle here is after user login against ADFS, then access Shib-CAS
>>> protected resources, how Shib can intercept the SAML assertion issued by
>>> ADFS
>> It can't. You're being asked for the impossible, and your diagram will
>> have to change or the requirements will.
>> -- Scott
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