Username substitution via LDAP call possible?

Pedranti, Brian bpedrant at
Tue Sep 4 18:31:10 CEST 2018

Hello all,

I am very new to Freeraduis, but, was doing a bunch of searching and I am coming up empty....

I would like to use Freeradius as a RADIUS proxy. I need a layer between our VMWare Horizon View system and Duo for 2-factor.
Unfortunately, our users login with their UPN, which is not kept on our Duo instance. We also cannot use aliasing in the Duo system.

So, we need it to take in an UPN (always an email address), and perform a LDAP lookup and then pass the users' CN or samAccountName on to our Duo authproxy RADIUS module.
The server can run on Linux or Windows.

Am I dreaming? Is this remotely doable? :)


Brian Pedranti  |  Server Manager
Information Technology Department | Harvard T.H. Chan School of Public Health
90 Smith St. Rm 212 | Boston, MA 02120
o: 617-998-6909

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