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Re: VMWare

To: "Shingari, Nitin V." <nvshingari@ipolicynetworks.com>
Subject: Re: VMWare
From: Tobias Glemser <tglemser@tele-consulting.com>
Date: Thu, 21 Dec 2006 12:12:05 +0100
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Nitin,

> While scanning networks how good is nessus in identifying VMWare
> running machines?
There seems to be no plugin doing that (altough it seems to be a good idea to me). But as long as the MAC Adresses within the VMware are not changed, you can identify those systems by having a look at the vendor part of the MAC. I would just do a quick nmap scan to resolve that.

 [root@26 ~]# nmap -sS -O mysystem.mynetwork.local
 Starting Nmap 4.20 ( http://insecure.org ) at 2006-12-21 12:06 CET
 Interesting ports on mysystem.mynetwork.local:
 Not shown: 1696 filtered ports
 PORT      STATE  SERVICE
 22/tcp    open   ssh
 MAC Address: 00:0C:29:74:34:44 (VMware)


> Does nesssus scan and report OS and Applications on VMWare
> successfully?
Mandriva Linux 10.2 on VMware-Server

 Security Note found (general/tcp)
 Plugin-ID      11936
 Description    Nessus was not able to reliably identify the remote
                operating system. It might be:
                 IBM OS/400
                 Linux Kernel 2.4
                 SCO UnixWare 8.0

Mandriva Linux 10.2 on "real" device (same patchlevel as vmware installation)

 Security Note found (general/tcp)
 Plugin-ID      11936
 Description    The remote host is running Linux Kernel
                 2.6.12-27mdk-i686-up-4GB (i386)

It seems like the beaviour for fingerpriting the OS changes (Layer 2(?), 3 and 4) when using VMware. This does not affect any application, for the fingerprinting mechanisms can only base on the beaviour of the applications themselves (Layer 5-7). This makes it a princible driven problem, so every OS detection I know will fail. E.g. nmap

Mandriva Linux 10.2 on VMware-Server
  Device type: general purpose|printer|WAP|specialized|storage-misc
  Running (JUST GUESSING) : Linux 2.6.X|2.4.X (92%), Xerox embedded
  (88%), etc etc etc

Mandriva Linux 10.2 on "real" device (same patchlevel as vmware installation)
  Device type: general purpose
  Running: Linux 2.6.X
  OS details: Linux 2.6.9 - 2.6.12 (x86)

Cheers,

Toby

Shingari, Nitin V. schrieb:
Hi folks,

While scanning networks how good is nessus in identifying VMWare running machines?

Does nesssus scan and report OS and Applications on VMWare successfully?

Warm Regards

Nitin Shingari

nvshingari@ipolicynetworks.com


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