Re: Problem Disabling "Null Session" on W2K3

On 2006-11-15 Alexey Vesnin wrote:
eneko.astorkiza@xxxxxxxxxxxx wrote:
I'm trying to secure some AD servers and i have a problem.

I scan then (w2k3 AD Servers) with Retina and it says that i have
"Null Session" enabled, so it shows all the domain users. (I'm doing
with a machine out of the domain)

The problem is that if i look at the RestrictAnonymous and
RestrictAnonymousSAM registry values, they are ok :-?

Someone knows why i can enumerate the domain users ???

I have also use SuperScan and the same happens.

Try Outpost Firewall Pro - or something similar. It's a well-tuned
windows firewall, and you can disable the session establishment
everywhere except the IP's needed.

Outpost (or any other personal firewall) does NOT solve the problem at
hand. The appropriate measure - as has already been suggested - is to
disable null sessions through the respective group policy.

Ansgar Wiechers
"All vulnerabilities deserve a public fear period prior to patches
becoming available."
--Jason Coombs on Bugtraq

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