Dynamic Vlan Allocation based on LDAP Attribute Value

[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

>
> Greetings,
>
> --
> Dr. Michael Schwartzkopff
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