Aw: Re: FreeRADIUS, OpenLDAP password change and RSA SecurID Next-Token-Mode

["michael böhm"]

   Hi Alan,

   with your hints I managed to get this running:

           # Case 1: No script-user -> 2FA
           if(User-Name !~ /^sc_.+$/) {
                   # Case 1.1: LDAP-PW + Token
                   if(User-Password =~ /^(.+)([0-9]{6})$/) {
                           update request {
                                   User-Password := "%{1}"
                           }
                           ldap
                           files
                           pap
                           pap.authenticate
                           update request {
                                   User-Password := "%{2}"
                           }
                           update control {
                                   Proxy-To-Realm := "securid"
                           }
                   }
                   # Case 1.2: Just a Token, no LDAP-PW, Next-Token-Mode
                   elsif(State && User-Password =~ /^([0-9]{6})$/) {
                           update control {
                                   Proxy-To-Realm := "securid"
                           }
                   }
           }
           # Case 2: script-user
           else {
                   ldap
                   files
                   pap
           }


   I get the error in freeradius -X:

   (2) Found Auth-Type = PAP
   (2) Found Auth-Type = Accept
   (2) ERROR: Warning:  Found 2 auth-types on request for user '<user>'

   Can I ignore this?

   Only one more problem is to solve:

   In post-auth we have a Perl-script that relies on the groups that come
   from LDAP to make user rights decisions. When we are in Next-Token-Mode
   (case 1.2) we do not query LDAP, so freeradius cannot pass the groups
   to the Perl script.

   Is there a way to tell freeradius to cache the LDAP-groups from the
   last request for case 1.1 and use them in 1.2? If there is no easy way
   I would delete Case 1.2 and tell the user to type in the LDAP-password
   again followed by the next Token.

   Thanks and best wishes

   Michael

   Gesendet: Montag, 03. Dezember 2018 um 14:11 Uhr
   Von: "Alan DeKok" <aland at deployingradius.com>
   An: "FreeRadius users mailing list"
   <freeradius-users at lists.freeradius.org>
   Betreff: Re: FreeRADIUS, OpenLDAP password change and RSA SecurID
   Next-Token-Mode
   On Dec 3, 2018, at 8:00 AM, michael böhm <ksk2 at gmx.net> wrote:
   > we've decided to use the Radius-interface of the SecurID-server and
   not
   > the proprietary protocol.
   OK.
   > Now I need unlang to make the access decision:
   >
   > LDAP-Plugin (accept) AND Proxy-Request to SecurID-Server (accept) =
   > ACCEPT to NAS
   >
   > I tried it like that in the authorize-section but it did not work:
   See the FAQ for "it doesn't work".
   > filter_username
   > preprocess
   >
   > # %{1} = ldap-password
   > # %{2} = Token
   >
   > if (User-Password =~ /^(.+)([0-9]{6})$/) {
   > update request {
   > User-Password := "%{2}"
   > }
   > update control {
   > Proxy-To-Realm := "securid"
   > }
   >
   > update request {
   > User-Password := "%{1}"
   > }
   >
   > ldap
   > }
   >
   > pap
   >
   > The proxying itself is working fine but not the correlation of the
   two
   > results.
   What does that mean?
   > Could you please give me a minimal example of how to create this
   > and-logic in unlang?
   My $0.02 is to check the users password *first*, and then proxy to RSA
   if it passed.
   if (User-Password =~ /^(.+)([0-9]{6})$/) {
   update request {
   User-Password := "%{2}"
   }
   # get the "known good" password from LDAP
   ldap
   # check the users password
   # if this fails, the user will be automatically rejected
   pap.authenticate
   update control {
   Proxy-To-Realm := "securid"
   }
   update request {
   User-Password := "%{1}"
   }
   }
   else {
   ... do stuff for non-RSA users ...
   }
   Alan DeKok.
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References

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