Rahul, My friend finally a response. Thank you for the input I had also read that link you provided, it was somewhat helpful. If the usernames were identical that would work great I believe. However the source name is coming in as joe_montana and I need it to map to jmontana. So I need only the first character of the first name and everything after the underscore (last name). I am looking for the expression that would give me that. I am not too familiar with the expressions syntax or how to manipulate them. I see there is an option to search ldap using ldap:///ou=people,dc=example,dc=com??one?(uid=$1), maybe I should look into that. Do you have any suggestions or source for reading on authz-regexp? I have been looking. If it was shell scripting I could manage another way.
When you say the SASL Realm would that go in the main slapd.conf or the /usr/lib/sasl2/slapd.conf?
I am indeed using GSSAPI for the SASL-auth-mechanism. I am getting close,just gotta get past this. :)
Thank you again. James
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Message: 2 Date: Mon, 11 Aug 2008 17:54:02 +0530 From: Rahul Amaram rahul@synovel.com Subject: Re: Help with authz-regexp mapping kerberos identity to dn ....SASL To: openldap-technical@openldap.org Message-ID: 48A02F62.1000305@synovel.com Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Hi Chavez, This is the authz-regexp string I have used in slapd.conf:
authz-regexp uid=([^,]*),cn=synovel.com,cn=gssapi,cn=auth uid=$1,ou=People,dc=synovel,dc=com
This works if the SASL auth mechanism is gssapi. I have also hard-coded the SASL Realm with the below config option:
sasl-realm SYNOVEL.COM
If it uses the default realm (i.e. sasl-realm option is missing) then the string would probably be:
authz-regexp uid=([^,]*),cn=gssapi,cn=auth uid=$1,ou=People,dc=synovel,dc=com
Hope this is of some assistance. For furthur information, kindly read http://www.openldap.org/doc/admin24/sasl.html#Mapping%20Authentication%2 0Identities .
Regards, Rahul.
Chavez, James R. wrote:
Hello all, My plan is to use Kerberos and LDAP as a replacement for NIS. My issue is that I need my kerberos credentials to map to a user in
LDAP
so I can avoid permission issues when logging in with kerberos creds. All the perms are based on the UNIX/LDAP users and groups. Thing is
the
user id's are different between kerberos and LDAP. The kerberos names consist of firstname_lastname@REALM. The ldap
entries
are in the format of standard Unix user names or first letter of first name and up to 7 characters of the last name (jmontana). I migrated
the
LDAP entries from my existing NIS maps. Now I understand that I can use SASL and authz-regexp in slapd.conf to map these id's. Please correct me if I am wrong.
I added all the corresponding "krbName: first_last@REALM" to the
users
when I added them to the LDAP directory. For example for user Joe Montana..His ldap dn is "dn: uid=jmontana,ou=People,dc=test,dc=example,dc=com" His uid is "uid: jmontana And his Krb name is ""krbName: joe_montana@TEST.EXAMPLE.COM"
I think all the data is there to get a mapping I just am unsure of the auth-regexp strings I need to add to the slapd.conf file. Does anyone out there have any experience with this and better yet provide the string or example of what strings I can use? I have searched the net on how to authenticate with kerberos and effictively login with a local id but have been unsuccessful in my search. Appreciate any help.
Thank You James
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