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Update on Project Moonshot: Implementing ABFAB Protocol for Improved Authentication

Project Moonshot is advancing the implementation of the Authenticated BINDing for Attribute-based Federation (ABFAB) protocol. This update covers the outcomes of the developer meeting and testing events held in March 2011. Key components include GSS EAP, RadSec, and support for RADIUS attributes and SAML assertions. Demonstrations of application integration with various platforms like Apache, OpenSSH, and Jabberd highlight the minimal changes required for seamless user experience. For more information and participation, visit the Project Moonshot website.

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Update on Project Moonshot: Implementing ABFAB Protocol for Improved Authentication

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  1. Project Moonshot update ABFAB, IETF 80

  2. About Moonshot • Moonshot is implementing ABFAB • Developer meeting, 24 March 2011 • Testing event, 25 March 2011 • A big thanks to • Luke Howard, Scott Cantor, Daniel Kouril, Michal Prochazka & Linus Nordberg.

  3. Moonshot components • GSS EAP • RadSec • Attribute extraction • Application integration

  4. Infrastructure • GSS library • Reasonably complete, all participants were able to demonstrate the mechanism working. • No EAP channel binding, yet. • RadSec • Early client support; works with radsecproxy. Not tested directly against a server. • Attribute extraction & policy layer • Support for RADIUS attributes, SAML assertions and attributes: support for local mapping and policy.

  5. Application integration • Demonstrated with • Apache & test HTTP client • Prior to test event, demonstrated with • openssh • Adium • Jabberd • On-going work for Firefox • As expected, changes are sometimes required to applications but are minimal.

  6. What’s possible with SSH SSH client SSH daemon Identity Provider EAP EAP SAML Attributes Policy & AAA integration AAA Local attrs GSS GSS AuthZ decision SSH SSH RFC 4462 using GSS EAP

  7. What’s possible with SSH • RFC 4462 used for GSS EAP authentication • RADIUS response includes SAML assertion; Identity Provider (IdP) wants to entitle user to log-in. • Shibboleth policy maps this entitlement from trusted IdPs to mechanism-independent authorisation. • SSH asks GSS for authorisation decision. • Core GSS authorises with no knowledge of SAML, EAP or RADIUS.

  8. Usability • Goal: to select an identity and enter credentials, without modifying applications. • Better experience when applications are modified. • Challenges • Error handling: when do you record a failure? • Authentication description: who are you trying to talk to, and for what? • Password handling: when both the application and the library can handle the password, what’s the best experience? • We need help from Kitten!

  9. Using an IdP with ABFAB • Conventional Web SSO is here to stay. • We want to use the same IdP for ABFAB and Web SSO. • For ABFAB, the RADIUS server typically wants an attribute query; how is the RADIUS server authorised to make that query for anyone?

  10. More information & participation • http://www.project-moonshot.org • Developer information: • http://www.project-moonshot.org/developers • Virtual machine for demonstration & testing: • http://www.project-moonshot.org/devwiki/vmdk

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