full-disclosure - Re: can you answer this?

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Message-ID: <4F2C2E89.4000606@nemesys.com>
Date: Fri, 03 Feb 2012 18:59:21 +0000
From: Granville Moore <gvm@...esys.com>
To: RandallM <randallm@...mail.com>
Cc: full-disclosure@...ts.grok.org.uk
Subject: Re: can you answer this?

On 03/02/2012 18:15, Full Disclosure mailing list wrote:
> On 03/02/2012 08:20, RandallM wrote:
>   
>> since no one could answer the last one how bout this. In my FW log
>> Trust (our 10.0.0.0. network) to untrust picked this up:
>>
>> 2012-02-02 10:08:10 7.254.254.254:68 7.254.254.255:67 0.0.0.0:0
>> 0.0.0.0:0 DHCP 0 sec. 0 0 Traffic Denied
>>
>> My "any" to "any" denied queue.
>>     
>
> I've seen this sort of thing before, from misconfigured VPNs.
>
> Do you have someone using "Tunngle" on your network?
>
> It's a VPN product (as far as I understand it, primarily for gaming), 
> and it appears to (mis)use the 7.xxx.xxx.xxx IP address space.  See this 
> for a report of similar packet sightings:
>
> http://www.tunngle.net/community/topic/18311-bsod/
>
> My guess is that one of your users has set up this VPN in order to 
> tunnel through your firewall, but it's not configured correctly and its 
> DHCP requests are going onto your main network rather than (as intended) 
> through the tunnel.  You might want to look into who is using this...
>
> Granville Moore
> Nemesys Computer Consultants
> www.nemesys.com
>
>   
Sorry - my "From" address was screwed up in my previous reply.

Granville Moore
Nemesys Computer Consultants
www.nemesys.com



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