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ISA Web Proxy Authentication and AD

Posted on 2008-10-08
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Last Modified: 2013-12-24
Hi All,

I'm new to ISA server and need some advice. We have an existing ISA 2006 server in our DMZ which is specifically used for OWA. We now have the need to monitor and secure our internal web browsing.

I've configured the Web proxy and added in a rule to allow outbound web access from the ISA server and Internal network and it works fine for a number of test users. I now want to integrate the proxy with our AD mainly for authentication and logging. The problem is that the ISA server is in the DMZ (for OWA) and not joined to our internal domain. The system policy is configured to allow AD authentication and I've  added rules to allow LDAP to our GC's.

What else do I still need to do as I can't browse the domain when trying to add AD users to rules Etc? It would be great if I could see which user is going where and using which protocol in the logging and reports.

Or will this only work if the ISA server is a member the same domain?

I have another ISA license so I could always setup another server joined to the domain and just have it running as a proxy....

Thanks,

Jim.
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Question by:jfreckeltom
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Expert Comment

by:Hisham_Elkouha
ID: 22669366
1-Your LDAP rule should be at the top of the rules.
2-Check that RPC service is running in ISA and the Domain Controller
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Author Comment

by:jfreckeltom
ID: 22669560
Hi,

Thanks for the reply...That didn't work I'm afraid.

Am I right in thinking that if go to Toolbox - Users - Create a new User set and browse the Windows Users and Groups this is where I should be able to select the domain and the users within?

Do you know of any other ports I need to open up?

Thanks.
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Expert Comment

by:Hisham_Elkouha
ID: 22670151
That is right the way you do to add the user set .

Please could you tell me how exactly you created the LDAP rule?

Did ypu enable the RPC from the sytem policy or not?
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Author Comment

by:jfreckeltom
ID: 22670572
Active Directory under Authentication Services in the system policy is enabled- is there anything else I need to do in there regarding RPC?  

The LDAP firewall rule = Local Host - Internal - DNS, LDAP (UDP), LDAP GC, LDAP, LDAPS GC, LDAPS, RPC, RPC SERVER

I've also added the GC as a computer interface and added it into the rule. There is also a similar rule going from Internal to local Host.

I setup a connectivity verifier and it just can't see the GC. I'm thinking our main firewall may be blocking access to it from the DMZ -LAN....Which I need to check.

Thanks again...
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Expert Comment

by:Hisham_Elkouha
ID: 22673069
Start-run-services

check that RPC services are started in biot ISA&Domain Controller
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Author Comment

by:jfreckeltom
ID: 22676848
Both services are running. It looks like it was our main Sonicwall firewall that was blocking the connection from the DMZ - LAN. The connectivity verifer now says that it is connected. Although if I create a user set I still can't see my domain, I only see the local machine.? ?

DNS on the nic is only pointing to the internal DNS server, which is the DC. Internet access works fine from the ISA so it must be getting the DNS ok.

Can anyone please confirm that when adding Windows users and groups I should be able to see the domain when the ISA server is not a member??

Thanks...
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Expert Comment

by:Hisham_Elkouha
ID: 22677308
Yes od course , It can be done that you have ISA not a member of the domain.

Regarding DNS , there must be rule enables the DNS protocol between ISA and DC
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Accepted Solution

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jfreckeltom earned 0 total points
ID: 22704363
Thanks. I ended up placing another ISA server inside the LAN just as a proxy on a single NIC. It does what I need now....

Jim
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