[Ground-station] Brazilian RF pirates on old Military GEO comms sats.

[KC9SGV]

Hi,

Well trod ground, certainly.
Recent ham radio systems like Echolink, Winlink, IRLP, etc. come to mind.
To access these systems, the individual ham is authenticated and authorized.
If this is done by hand, individually....good luck with that.
A full time job for somebody with the resultant delays in authorization.

Authentication is not to stop the enterprising, criminal element to usurp an old "CW only" operator's call sign and operate digitally through the satellite, even with an on-board data base.
Such old "CW only" operator will never have the reason to suspect his callsign is being used nefariously....

Most of the client ground station hardware will be home brewed anyway, with no authentication chips in place.

Maybe, authentication via cell phone before each QSO, is what is needed.
The way on-line banks now authenticate customers for on-line banking transactions.

Bernard,
KC9SGV

Sent from my iPad

> On Aug 19, 2019, at 9:36 AM, Michelle Thompson <mountain.michelle at gmail.com> wrote:
> 
> This is one of the biggest reasons our designs are regenerative repeaters with authentication and (optional) authorization. 
> 
> Background info is in the repo, but the essential mechanism is what LotW uses combined with white and black lists. Requires a database in the payload and enough horsepower to afford the overhead.
> 
> Fortunately, it’s well trod ground. It would be even better with a working authentication/authorization demo, but we just got a good channelizer working. We are much closer to a working end to end demo than we were just a few weeks ago. 
> 
> *Enabling legacy traffic through the aggregator is a special case. The aggregated traffic is tagged, but the individual traffic channels (FM hts, p25, d-star) would not necessarily be individually authenticated. 
> 
> -mdt
> 
>> On Mon, Aug 19, 2019 at 07:02 John Klingelhoeffer via Ground-Station <ground-station at lists.openresearch.institute> wrote:
>> Unless we configure an appropriate authentication system, I am afraid we will suffer a similar fate.  So much for open transponders.   
>> 
>>> On Sun, Aug 18, 2019 at 1:07 PM KC9SGV via Ground-Station <ground-station at lists.openresearch.institute> wrote:
>>> I agree and understand that.
>>> So let us concentrate on getting our very own, very legal ham GEO sat up for Region 2 ASAP.
>>> Hopefully these old 1970's technology military comms sats are not completely abandoned by the various Western militaries.
>>> For fun, revisit the movie "Space Cowboys" with Clint Eastwood now on Netflix.
>>> Somewhat related.
>>> 
>>> Bernard,
>>> KC9SGV
>>> 
>>> 
>>> Sent from my iPad
>>> 
>>>> On Aug 18, 2019, at 12:16 PM, Timestep <help at time-step.com> wrote:
>>>> 
>>>> It's easy world wide communication.  However the USA Government will track you down...........
>>>>  
>>>> Regards
>>>>  
>>>> Dave  G 4IUG
> -- 
> -Michelle W5NYV
> 
> "Potestatem obscuri lateris nescis."
> 
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