Trying to wrap my head around FreeRadius config

Moe, John jmoe at
Thu Jul 21 07:48:34 CEST 2011

> -----Original Message-----
> > 1.) Use only ntlm_auth.  If necessary you can use "require-membership-
> > of" (I forget exact syntax) to ensure only members of "Network Admins"
> > can get a cli on your network gear.  It will also work for 802.1x
> >From what I've read, require-membership-of is a switch to ntlm_auth, and 
> >(if
> I've understood these things properly) I'm going to need to create multiple
> instances of the "exec" module, one for each group I'm going to want to use
> as a check.  Hopefully, someone can tell me if I've got this right.

Actually, looking into this a bit more, I think I need to use an if block. 
Something like:

if (nlm_auth with --require-membership-of testing against an AD group 
succeeds) {
  update {
    # HP ProCurve switches want a Service-Type of Administrative for manager 
    Service-Type := 6
  # I think/assume this add Access-Accept to the reply items, and marks it as 
elsif (nlm_auth with --require-membership-of testing against another AD group 
succeeds) {
  update {
    # HP ProCurve switches want a Service-Type of NAS Prompt for operator 
    Service-Type := 7
  # See comment for "ok" above
# I don't think this else block is needed at all?
else {
  # Not handled, let processing continue

Does this look right?  How do I configure the checking in the parenthesis? 
I'm assuming I don't just put 
"nlm_auth --require-membership-of=DOMAIN\\GROUP1 --username=%{mschap:User-Name} 
 --password=%{User-Password}" in the parenthesis?

John H. Moe
Network Support - Hatch IT
Tel: +61 (7) 3166 7777
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