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active directory authentication UTM

currently testing an Astaro security appliance and hit a snag

in test lab everything works as expetced but initail testing on production domain is not as promising

essentially its as if something is blocking the AD authentication side of things

as mentioned on a newly built domain it joins and authenticates.

on live it says its joined but the doesnt actuall work

what type of things might be preventing this from working

astaro is a UTM linux based appliance  you connect by giving it a bind user e.g  cn=administrator,cn=users,dc=domain,dc-com
after this you are able to assign web browsing policys by (ad) group

what may be happerning, did have some trouble with rights  (protected groups inherritence etc)  might be part of it?

everything pings and resolves
any policys that may stop non windows authenticating?
Windows 2003 AD
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1 Solution
Toni UranjekConsultant/TrainerCommented:

There are at least three group policy settings defined in Default Domain Controllers Policy which can affect communication between domain controllers and non-Micorosoft operating systems.

To configure first setting correctly you would have to find out which form of authentication does your applilance use. LM, NTLMv1, NTLMv2 or Kerberos?

Configure Computer Configuration\Windows Settings\Security Settings\Local Policies\Security Options\Network security: LAN Manager authentication level to use "Send LM & NTLM responses". This is the least secure setting.

After that you should disable the following setting: Microsoft network server: Digitally sign communications (always) and Domain controller: LDAP server signing requirements.

The following KB article might help you to troubleshoot your issue:
"Client, service, and program incompatibilities that may occur when you modify security settings and user rights assignments"


mhamerAuthor Commented:
thank you all set correctly per your comments still no joy
Toni UranjekConsultant/TrainerCommented:
Unfortunately I'm not familiar with this device so I won't be much of assistance, I would recommend that you contact their support directly, maybe they've handled similar situatuions in the past.

Or you can run "gpresult /z > gpo.txt" on one of your domain controllers in lab environment and one in your domain and compare results under computer configuration, user right settings, maybe you will spot the difference.
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mhamerAuthor Commented:
compaing the policys pointed out a few other issues not a fix as still bust but it gets further :-)
Toni UranjekConsultant/TrainerCommented:
This is the first time I will say thanks for a C grade, but unfortunately I could not offer any better sugestion.

However, you could one more thing. There is one particular policy that affects only domain controllers. Default domain controllers policy, disable its link in your domain. Back it up with GPMC in both domains. Create new GPO in your domain, link it to the "Domain Controllers" and import settings from backup from test environment.  If it doesn't work you can still enable link from original DDCP, and delete the imported GPO.
Just some ideas

You could setup a group policy to point users to the proxy.  Downside will not make firefox, opera etc go to the proxy.  

Maybe make the router send all http traffic to the proxy.  

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