I am still running into issue when attempting to use openldap as a proxy to
AD. When I do a TCP dump on the proxy server, it doesn't appear to be
actually communicating with the AD server when I issue "id user" from a
client server. When I issue the same command from the "proxy" it connects
to the AD as the correct user and pulls the correct information. Any help
or suggestions would be greatly appreciated. Below is a snippet of my
slapd.conf from the proxy and also my ldap.conf from the client machine.
[slapd.conf]
database ldap
suffix "cn=Users,dc=ldaptest,dc=local"
#subordinate
rebind-as-user
uri "ldap://2008vm1.inetu.net";
acl-bind bindmethod=simple
binddn="CN=Bind User,CN=Users,DC=ldaptest,DC=local"
credentials="testing"
chase-referrals yes
idassert-bind bindmethod=simple
authzID="u:bind"
mode=self
idassert-authzFrom "dn.regex:.*"
binddn="CN=Bind User,CN=Users,DC=ldaptest,DC=local"
credentials="testing"
idassert-authzFrom "dn.regex:.*"
[slapd.conf end]
[ldap.conf]
host 10.100.223.63
port 389
base cn=Users,dc=ldaptest,dc=local
ldap_version 3
scope sub
timelimit 10
bind_timelimit 5
idle_timeout 90
bind_policy soft
pam_filter objectClass=posixAccount
pam_login_attribute uid
pam_lookup_policy no
[ldap.conf end]
I can provide logs if needed.
Thanks in advance....
-----Original Message-----
From: openldap-technical-bounces+lyork=inetu.net@openldap.org
[mailto:openldap-technical-bounces+lyork=inetu.net@openldap.org] On Behalf
Of Lynn York
Sent: Wednesday, September 10, 2008 10:14 AM
To: Pierangelo Masarati
Cc: openldap-technical@openldap.org
Subject: RE: LDAP proxy for AD
I am not worried about the client machine binding to the proxy server as
long as the proxy server binds with a user to the AD server.
Right now what is happening is:
Issue " id user " on the client server, the connect then makes it to proxy
server as anonymous, but the proxy never attempts to bind to the AD server
to verify if "user" exists in AD. If I issues the same command " id user "
from the proxy server, it binds to AD and give me information about the
user. I can't figure out how to get the client server to bind to the AD
server "through" the proxy?
-Lynn
-----Original Message-----
From: Pierangelo Masarati [mailto:ando@sys-net.it]
Sent: Wednesday, September 10, 2008 9:12 AM
To: Lynn York
Cc: openldap-technical@openldap.org
Subject: Re: LDAP proxy for AD
Lynn York wrote:
> When I issue "id user" from the client machine I can see the connection to
> the proxy server, but I do not see the connection from the proxy to the AD
> server. It also binds anonymously through the proxy and I need it to bind
> with a certain user.
>
> [ SNIPPET FROM slapd.conf ]
>
> database ldap
> suffix "dc=ldaptest,dc=local"
> uri "ldap://2008vm1.inetu.net";
>
> acl-bind bindmethod=simple
> binddn="CN=Bind User,CN=Users,DC=ldaptest,DC=local"
> credentials="testing"
>
> idassert-bind bindmethod=simple
> authzID="u:bind"
> mode=self
> binddn="CN=Bind User,CN=Users,DC=ldaptest,DC=local"
> credentials="testing"
First of all, authzID is only useful if "mode" is not given, as
specified in the man page; it's ignored in your case.
Second, the idassert-bind directive is only honored if the user
authenticates, while your application is probably binding anonymously to
the proxy.
If you want idassert to work also for anonymous operations (not
recommended, as this defeats the security model of the remote server, by
letting it believe that the proxy authenticated users while it didn't),
you need to explicitly enable it using an idassert-authzFrom rule that
includes anonymous, like
idassert-authzFrom "dn.regex:.*"
p.
Ing. Pierangelo Masarati
OpenLDAP Core Team
SysNet s.r.l.
via Dossi, 8 - 27100 Pavia - ITALIA
http://www.sys-net.it
-----------------------------------
Office: +39 02 23998309
Mobile: +39 333 4963172
Fax: +39 0382 476497
Email: ando@sys-net.it
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