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Apache 2.4 how to authenticate multiple ldap OUs

 
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dnp



Joined: 12 Dec 2018
Posts: 2
Location: Providence

PostPosted: Thu 13 Dec '18 21:21    Post subject: Apache 2.4 how to authenticate multiple ldap OUs Reply with quote

Hello,

Does anyone have any idea how to authenticate a user against two different OUs on the same AD server?

I am using Apache 2.4 on Ubuntu 18.04.
Server version: Apache/2.4.18 (Ubuntu)
Server built: 2018-06-07T19:43:03

The user could be in "ABC User" or "XYZ user".
AD OUs are:
AuthLDAPURL "ldap://adx.ABC.org:389/OU=ABC Users,DC=ABC,DC=org?sAMAccountName?sub?(objectClass=*)"
and
AuthLDAPURL "ldap://adx.ABC.org:389/OU=XYZ Users,DC=ABC,DC=org?sAMAccountName?sub?(objectClass=*)"


Part of the current conf file:
<Location />
AuthName "ABC Intranet"
AuthBasicProvider ldap

AuthType Basic
AuthLDAPURL "ldap://adx.ABC.org:389/OU=ABC Users,DC=ABC,DC=org?sAMAccountName?sub?(objectClass=*)"

# login to AD
AuthLDAPBindDN "CN=ldap_ABCweb,OU=ABC Service Accounts,DC=ABC,DC=org"
AuthLDAPBindPassword
AuthLDAPGroupAttributeIsDN off
AuthLDAPGroupAttribute memberUid

# tried this and failed
# Require ldap-filter (&(memberOf='OU=XYZ Users,DC=ABC,DC=org?sAMAccountName?sub?(objectClass=*')|(memberOf='OU=ABC Users,DC=ABC,DC=org?sAMAccountName?sub?(objectClass=*'))

# tried this and failed
# <RequireAny>
# Require ldap-filter (&(memberOf='OU=ABC Users,DC=ABC,DC=org?sAMAccountName?sub?(objectClass=*'))
# Require ldap-filter (&(memberOf='OU=XYZ Users,DC=ABC,DC=org?sAMAccountName?sub?(objectClass=*'))
# </RequireAny>

# require any is implied
require any
Require valid-user
Require ip 10.46
Require ip 130.44
Require ip 10.44

I have a userid supplied by the user via a user/password prompt supplied by Apache. In order for the user to login they need to be in either of these OUs:
"ldap://adx.ABC.org:389/OU=ABC Users,DC=ABC,DC=org?sAMAccountName?sub?(objectClass=*)"
or\
"ldap://adx.ABC.org:389/OU=XYZ Users,DC=ABC,DC=org?sAMAccountName?sub?(objectClass=*)".

I donít know how to configure the auth module in Apache 2.4 to validate against more than one OU.

Dan
</Location>
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James Blond
Moderator


Joined: 19 Jan 2006
Posts: 6499
Location: Germany, Next to Hamburg

PostPosted: Fri 14 Dec '18 12:05    Post subject: Reply with quote

If you need to add multiple OU= values in the LDAP url you must have separate LDAP urls and utilize AuthnProviderAlias to check both LDAP searches.

Code:

LoadModule authn_alias_module modules/mod_authn_alias.so
               
<AuthnProviderAlias ldap ldap-alias1>
AuthLDAPBindDN cn=youruser,o=ctx
AuthLDAPBindPassword yourpassword
AuthLDAPURL ldap://ldap.host/o=ctx
</AuthnProviderAlias>
               
<AuthnProviderAlias ldap ldap-other-alias>
AuthLDAPBindDN cn=yourotheruser,o=dev
AuthLDAPBindPassword yourotherpassword
AuthLDAPURL ldap://other.ldap.host/o=dev?cn
</AuthnProviderAlias>
               
Alias /secure /webpages/secure
<Directory /webpages/secure>
Order deny,allow
Allow from all
               
AuthBasicProvider ldap-other-alias ldap-alias1
               
AuthType Basic
AuthName LDAP_Protected_Place
AuthzLDAPAuthoritative off
Require valid-user
</Directory>       


See https://httpd.apache.org/docs/trunk/mod/mod_authn_core.html
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dnp



Joined: 12 Dec 2018
Posts: 2
Location: Providence

PostPosted: Tue 18 Dec '18 22:00    Post subject: Reply with quote

James,

It works! Thank you very much for your help. I really appreciated it!

Dan
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