Eric J. Hoffman wrote:
> Have an app that is remote from a network that is your standard LDAP/AD
> deal....the client's folks really want the remote app to authenticate
> back via LDAP.

Is LDAP a means or an end here? Do they specifically want LDAP or do they want 
something that allows single sign on and ties into AD and is LDAP just the 
first thing that came to their mind?


> Now, I don't want to open up 389 in the firewall at all; so for you
> great CF minds out there....is it even remotely advisable to setup a
> firewall rule to accept 389 LDAP requests from a single IP
> address.....so this CF app can do its thing??

If they really want LDAP, you are going to have to give them LDAP. You can 
argue a security baseline and require IPSec, TLS, server hardening etc., but in 
the end the client is king.


> I always err on the side of no in these situations....but limiting it to
> a specific IP is decent...but relies on that system being correct and
> free of breach....has others seen this go on?

If they really want LDAP the entire security of the AD can be breached. The 
problem with LDAP authentication is that the users enter their credentials on 
the remote application, and the remote application checks the credentials with 
the LDAP server. If the remote application is breached, the credentials are 
breached because they pass through the remote application.
What you really want is a Trusted Third Party setup where the users enter their 
credentials at the AD, and then the AD guarantees the identity to the remote 
application without revealing the credentials. If the remote application is 
breached, only the remote application is breached, not the credentials. If you 
want to do this right you should use something like Kerberos, A-Select, 
Shibboleth.

Jochem


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  • Re: LDAP Dave Ross
    • Re: LDAP Jochem van Dieten

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