Help with chap

[Franks Andy (RLZ) IT Systems Engineer]

Thanks Phil. I'll keep that up my sleeve for future use. We tend to
separate admin / wireless / mac-based auth off on to different radius
boxes. Keeps things a bit easier. Not sure what cisco do, but a lot of
their stuff tends to be pap or eap. HP doing chap here seems to limit
quite a lot of backend options. 
It's still also the only protocol, or so it seems, chosen for iscsi
authentication which is an interesting choice consider it's
vulnerabilites. Guess ipsec gets used instead where it needs to be
secure.
Now to work out the useraccountcontrol setting. Seems to be different in
users and computers than in an ldap viewer, but the ldap is probably a
decimal conversion or something.
Thanks again
  Andy

-----Original Message-----
From:
freeradius-users-bounces+andy.franks=sath.nhs.uk at lists.freeradius.org
[mailto:freeradius-users-bounces+andy.franks=sath.nhs.uk at lists.freeradiu
s.org] On Behalf Of Phil Mayers
Sent: 21 May 2013 08:06
To: freeradius-users at lists.freeradius.org
Subject: Re: Help with chap

On 05/21/2013 07:55 AM, Franks Andy (RLZ) IT Systems Engineer wrote:

> Can I just use the authorize section to set the password to be the 
> same as the username, i.e. the mac address, after checking some basics

> like whether the user exists in ldap and perhaps the 
> useraccountcontrol value, then in the authorize section just let the 
> chap bit work on the assigned password?

Yes. In fact that's the best approach. Something like:

authorize {
   ...
   if (some condition) {
     update control {
       Cleartext-Password := "%{User-Name}"
     }
   }
   ...
}

"some condition" would normally be some sort of check to ensure it was a
macauth-via-CHAP request - obviously you wouldn't want to force
password==username for a PPP/EAP/other "real" user request. On the other
hand if your server / virtual server only receives this traffic, you can
omit the condition.

I really dislike vendors who do macauth as CHAP. It seems to completely
lack value, and adds complexity. Le sigh..
-
List info/subscribe/unsubscribe? See
http://www.freeradius.org/list/users.html