Controlled LDAP Proxy/Relay

Hello,

thanks for your answer.

But I don’t have any local users. All users are in two targets: domain01.com and domain99.net (AD). Where I should place userPassword attribute?

My problem:

We have a VoIP realized by Cisco Unified Call Manager (CUCM). There are several thousand users in the customers directory (domain01.com) using CUCM for Voice and ca 100 adminusers in the supplier directory (domain99.net). No trusting, different companies.

Because CUCM can use only one directory to authenticate users I've implemented a OpenLDAP Metadirectory that proxying this 2 Microsft AD targets.

But meta backend tries to authenticate by the first target, if the user was not found, by the second.

Result: Intrusion detection register a lot of unsuccessfully login attempts.

Therefore my question:

Is it possible to implement the controlled proxy with OpenLDAP ?

E.g., like Radiusproxy based on realm: when username is _xxx@domain01.com_ go to the target1, and when username is _xxx@domain99.net_ go to the target2.

Can you help me please

Kind regards

Waldemar

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On 08/02/2012 09:58, W.Siebert@t-systems.com wrote:

> Is it possible to implement the controlled proxy with OpenLDAP ?

> E.g., like Radiusproxy based on realm: when username is

> _xxx@domain01.com_ <mailto:xxx@domain01.com> go to the target1, and

> when username is _xxx@domain99.net_<mailto:xxx@domain99.net> go to the target2.

Yes, a combination of meta database config in slapd.conf and appropriate SASL config.

In your schema, use the following in userPassword:

userPassword: {SASL}xxx@DOMAIN

where DOMAIN is whichever domain the user needs to be authenticated against.

In slapd.conf:

database meta

suffix dc=local

rootdn cn=administrator,dc=local

rootpw secret

# domain01

uri ldaps://domain01.com:3269/ou=domain01.com,dc=local

lastmod off

suffixmassage "ou=domain01.com=local" "dc=domain01,dc=com"

idassert-bind bindmethod=simple

binddn="cn=binder,dc=domain01,dc=com"

credentials="password"

flags=non-prescriptive

idassert-authzFrom "dn.exact:cn=administrator,dc=local"

# domain02

uri ldaps://domain02.com:3269/ou=domain02.com,dc=local

lastmod off

suffixmassage "ou=domain02.com=local" "dc=domain02,dc=com"

idassert-bind bindmethod=simple

binddn="cn=binder,dc=domain02,dc=com"

credentials="password"

flags=non-prescriptive

idassert-authzFrom "dn.exact:cn=administrator,dc=local"

In saslauthd.conf you need to create the appropriate search base for authentication based on the domain in the userPassword field:

ldap_servers: ldapi://%2Fvar%2Frun%2Fslapd%2Fldapi-meta

ldap_search_base: ou=%d,dc=local

ldap_filter: (sAMAccountName=%U)

ldap_auth_method: bind

ldap_bind_dn: cn=administrator,dc=local

ldap_password: secret

ldap_deref: never

ldap_use_sasl: no

Hopefully this is enough info to get you going.

Liam Gretton liam.gretton@le.ac.uk

HPC Architect http://www.le.ac.uk/its

IT Services Tel: +44 (0)116 2522254

University of Leicester, University Road Leicestershire LE1 7RH, United Kingdom