Dynamic Vlan Allocation based on LDAP Attribute Value

[Michael Schwartzkopff]

Am Freitag, 13. Februar 2009 12:36:09 schrieb Paul Dealy:
> On Fri, Feb 13, 2009 at 10:16 PM, Michael Schwartzkopff
>
> <misch at multinet.de> wrote:
> > Am Freitag, 13. Februar 2009 11:54:29 schrieb Paul Dealy:
> >> On Fri, Feb 13, 2009 at 9:12 PM, Michael Schwartzkopff
> >>
> >> <misch at multinet.de> wrote:
> >> > Am Freitag, 13. Februar 2009 11:00:10 schrieb Paul Dealy:
> >> >> On Fri, Feb 13, 2009 at 6:37 PM, Michael Schwartzkopff
> >> >>
> >> >> <misch at multinet.de> wrote:
> >> >> > Am Freitag, 13. Februar 2009 07:17:17 schrieb Paul Dealy:
> >> >> >> I have a working radius server (ver 1.1.3). which I am using for
> >> >> >> 802.1x authentication of wired switch ports.  I would like to
> >> >> >> dynamically assign users vlans.  I have cisco gear and have
> >> >> >> achieved basic vlan allocation by configuring a Default entry in
> >> >> >> the users file.   So the vlan allocation part works ok.
> >> >> >>
> >> >> >> What I want to be able to do is allocate the vlan by matching the
> >> >> >> value of an LDAP attribute.  Not by group membership, but the
> >> >> >> actual value of a users attribute.  Is this possible?
> >> >> >>
> >> >> >> Cheers,
> >> >> >> Dealy
> >> >> >
> >> >> > Yes. Just assign these attributes to the user object in LDAP.
> >> >>
> >> >> I have a value set for an attribute in LDAP, how do I "extract" the
> >> >> value from the attribute  and do a comparison on it in the users file
> >> >> so I can set the VLAN?
> >> >
> >> > Hi,
> >> >
> >> > I don't remember exactly what I did on version 1. Please see:
> >> > http://vuksan.com/linux/dot1x/802-1x-LDAP.html
> >> > for some hints.
> >> >
> >> > I had something like
> >> >
> >> > DEFAULT Auth-Type .= LDAP
> >> >        Reply-Message = "Auth by LADP"
> >> >
> >> > in my users file. Other attributes stored in an object of objectClass
> >> > radiusprofile should be added automatically to the Reply attributes.
> >>
> >> I don't actually want to add radiusprofile attributes to my LDAP.  The
> >> users already have an attribute which identifies their department.  I
> >> want to be able to say if "department attribute = X then allocate VLAN
> >> Y".  Can this be done without specifically setting the vlan etc as
> >> radiusprofile attributes.  Also I am not using ldap for the
> >> authentication, just authorization.  The authentication is done using
> >> ntlm_auth.
> >
> > Then you would habe to re-map some LDAP-attribute of your objectClass to
> > Tunnel-Private-Group-ID. The Tunnel-Type=VLAN and
> > Tunnel-Medium-Type=IEEE-802 could be set in the DEFAULT section of the
> > users file.
> >
> > Please see the ldap.attrmap in your raddb dir for the mapping of
> > attributes.
>
> Am I correct in saying that the LDAP-attribute that is mapped to
> Tunnel-Private-Group-ID would need to be set to the value of the the
> VLAN I require?  The  LDAP-attribute that I wish to use curently
> contains values like "ITISCP" and "ENISCP".  I want to say if
> attribute value  == ITISCP set vlan to 226 (ie Tunnel-Private-Group-ID
> = 226).  Using ldap.attrmap mappings I would need to store the
> required vlan in a LDAP attribute.  (I can't change the LDAP only read
> it).
>
> Cheers

Hi,

forget my last mail. I did not think to the end.

Create a radiusprofile Object, fill in the correct VLAN values for the 
depertments and setup group membership to your needs accoding to section 

 #  Group membership checking.  Disabled by default.
#
# groupname_attribute = cn
# groupmembership_filter = "(|(&(objectClass=GroupOfNames)
(member=%{control:Ldap-UserDn}))(&(objectClass=GroupOfUniqueNames)
(uniquemember=%{control:Ldap-UserDn})))"
# groupmembership_attribute = radiusGroupName

Then the group points to the department and the radiusprofile object of that 
department adds the correct VLAN number.

-- 
Dr. Michael Schwartzkopff
MultiNET Services GmbH
Addresse: Bretonischer Ring 7; 85630 Grasbrunn; Germany
Tel: +49 - 89 - 45 69 11 0
Fax: +49 - 89 - 45 69 11 21
mob: +49 - 174 - 343 28 75

mail: misch at multinet.de
web: www.multinet.de

Sitz der Gesellschaft: 85630 Grasbrunn
Registergericht: Amtsgericht München HRB 114375
Geschäftsführer: Günter Jurgeneit, Hubert Martens

---

PGP Fingerprint: F919 3919 FF12 ED5A 2801 DEA6 AA77 57A4 EDD8 979B
Skype: misch42