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Hello,

I'm not exactly sure why this is a "vulnerability" or "threat". As your report shows, there's no compliance issue, no exploits, and unless the name of your server was somehow confidential, I really don't see the harm?

Your report merely says "if you don't need this feature, turn it off". I think that's mostly a suggestion to you, that you might not need this. (If you are not running any Windows 9x PCs, or old versions of Samba, you wouldn't need NetBIOS...)

But, I'm not sure if it can be turned off on NetServer like it can on Windows. Have you asked IBM?

You could simply block ports 137-139 in your firewall. Then NetBIOS would be available to your network, but not "remotely accessible"



On 2/16/2011 1:55 PM, rob@xxxxxxxxx wrote:
We've contracted with IBM to perform some threat analysis of our network.
We get these qualsys reports of our vulnerabilities.
One vulnerability is NetBIOS Name Accessible.

Is NetBIOS really on our i? Should we shut it down? If so, how do we do
that?

Details of threat are below:

Level 2 NetBIOS Name Accessible
QID: 70000
Category: SMB / NETBIOS
CVE ID: -
Vendor Reference: -
Bugtraq ID: -
Service Modified: 04/28/2009
User Modified: -
Edited: No
THREAT:
Unauthorized users can obtain this host's NetBIOS server name from a
remote system.
IMPACT:
Unauthorized users can obtain the list of NetBIOS servers on your network.
This list outlines trust relationships between server and client
computers. Unauthorized users can therefore use a vulnerable host to
penetrate secure servers.
SOLUTION:
If the NetBIOS service is not required on this host, disable it.
Otherwise, block any NetBIOS traffic at your network boundaries.
COMPLIANCE:
Not Applicable
EXPLOITABILITY:
There is no exploitability information for this vulnerability.
ASSOCIATED MALWARE:
There is no malware information for this vulnerability.
RESULTS:
GDWEB



Rob Berendt


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