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[aprssig] Re : NWS ON rf

Steve Dimse steve at dimse.com
Sat May 9 14:43:26 UTC 2009


I cannot over-emphasize this...

You cannot verify ANYTHING that appears on the APRS Internet System.

Anyone can send anything. Anyone can send something that appears to  
originate from your callsign. Looking it up on QRZ is meaningless,  
because even though your callsign is there, there is nothing that  
keeps someone else (ham or non-ham) from sending something with your  
callsign. Yes, you can show that F4ARO is a real callsign, but it  
cannot be proven that you actually sent it.

I've gone through the history many time before, the short version is  
that the very weak authentication that was in place to meet the  
requirements of the US Amateur Radio rules was invalidated when an  
open source software author felt the only way to satisfy the  
requirements of the GPL was to release the program with the source  
code for the validation algorithm, nearly a decade ago. Nothing can  
fix it short of a complete redo of the APRS IS. In the meantime, all  
we can do is take solace in the fact that there have been few problems  
over this decade.

Steve K4HG

On May 9, 2009, at 10:28 AM, Leszek Adamiak F4ARO wrote:

> Hi
> All right for all explains
> But how we have possibility to verify if the tactical call is true ?
> Not hams can send via IP a message without any control.
> Hams have a valid number for IP server.
> We can verify on qrz.com for exemple a call but where found  
> information for tactical call ?
> Here in France, we not have tactical just offical
> 73 de F4ARO Leszek
> http://f4aro.free.fr
>
>
> De : Steve Dimse <steve at dimse.com>
> À : TAPR APRS Mailing List <aprssig at tapr.org>
> Envoyé le : Samedi, 9 Mai 2009, 15h58mn 16s
> Objet : Re: [aprssig] NWS ON rf
>
> Sorry, I hit send too soon. The other point I wanted to make is that  
> the APRS Internet System was not intended to be, and never was, a  
> hamradio only network. From when I first conceived of it I wanted it  
> to serve as an ambassador for amateur radio, one that showed a new  
> audience of people the value of amateur radio. It has succeeded in  
> this regard, I have heard from many people who became hams after  
> being introduced to the possibilities through the internet side of  
> APRS. A large number of the users of the APRS IS are not hams (yet)  
> and that is not a bad thing.
>
> Steve K4HG
>
> On May 9, 2009, at 5:55 AM, rttyman wrote:
>
> > Hello!
> >
> > We should filter and stop all traffic in APRS-IS without hamradio  
> callsign
> > in _source_ and _gated by_ fields and problem will go left! Just
> > remember that its hamradio network!
> >
> >
> > 73, Sergej
> > uz2hz
> >
> >
> > _______________________________________________
> > aprssig mailing list
> > aprssig at tapr.org
> > https://www.tapr.org/cgi-bin/mailman/listinfo/aprssig
> >
>
>
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