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Old 02-11-2009, 05:46 AM   #1
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LDAP authentication without PAM

Hi all,

I have several computers running Slackware 12.2. A need for LDAP authentication arised recently. What I found is there are two choices:

1. use PAM together with some other stuff - however, PAM is not a part of the official Slackware distribution. After reading some forums I decided not to install it myself.

2. use nss_ldap - this is the way I tried. However it looks like it needs an access to userPassword entry stored on the LDAP server and (not surprisingly) the admin of that server doesn't want to make them readable. I know there is another way to authenticate using LDAP through BINDing to the LDAP server, but unfortunatelly I was unable to find how to tell nss_ldap to use this way (nor do I know it is possible).

Could you please help me?

Thank you in advance!

Old 02-12-2009, 04:25 PM   #2
Alien Bob
Slackware Contributor
Registered: Sep 2005
Location: Eindhoven, The Netherlands
Distribution: Slackware
Posts: 6,247

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You are correct: nss_ldap does indeed need read access to the userPassword attribute of your LDAP server. The only way around that is to know the LDAP root user's password and I think your admin will not give that either. So, you're stuck.
PAM will bind to the LDAP server to check the password and therefore does not need to be able to read the userPassword attr...



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