For posterity and in case it helps anyone else in the future:

I opened a ticket for this issue on the VirtualBox bugtracker
(https://www.virtualbox.org/ticket/14055) which was closed as a
probable duplicate of https://www.virtualbox.org/ticket/13475 which
itself was just marked fixed in the next release.

I will attempt to replicate my problems in the new release of
VirtualBox and report back if I still encounter problems.

Thanks,
Jeff

On Thu, Apr 23, 2015 at 3:18 AM, Steffan Karger <stef...@karger.me> wrote:
>
> On 23-04-15 08:58, Gert Doering wrote:
>> On Wed, Apr 22, 2015 at 05:25:54PM -0700, blz wrote:
>>>> The server will just update its "what IP/port is the client on?" table
>>>> entry, without restarting anything.
>>>
>>> What I'm wondering is how secure that is, such as how easily one could
>>> fake such a reconnect to get in on someone else's session, where they
>>> wouldn't even need a key? I hope this is just good ol' fashion paranoia
>>> on my part, but it would be nice to know. Thanks.
>>
>> The server updates its table entry only if the packet's HMAC validates,
>> read "the client knows the key material for that particular session".
>
> It is even better: the server checks both the HMAC /and/ replay
> protection before updating its table entry. This means that an attacker
> also can't use older, previously valid, packets to mount a
> denial-of-service attack.
>
> -Steffan
>
> ------------------------------------------------------------------------------
> BPM Camp - Free Virtual Workshop May 6th at 10am PDT/1PM EDT
> Develop your own process in accordance with the BPMN 2 standard
> Learn Process modeling best practices with Bonita BPM through live exercises
> http://www.bonitasoft.com/be-part-of-it/events/bpm-camp-virtual- event?utm_
> source=Sourceforge_BPM_Camp_5_6_15&utm_medium=email&utm_campaign=VA_SF
> _______________________________________________
> Openvpn-users mailing list
> Openvpn-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/openvpn-users

------------------------------------------------------------------------------
One dashboard for servers and applications across Physical-Virtual-Cloud 
Widest out-of-the-box monitoring support with 50+ applications
Performance metrics, stats and reports that give you Actionable Insights
Deep dive visibility with transaction tracing using APM Insight.
http://ad.doubleclick.net/ddm/clk/290420510;117567292;y
_______________________________________________
Openvpn-users mailing list
Openvpn-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/openvpn-users

Reply via email to