[Elecraft] K2 Remote via the Internet

Tony Wells [email protected]
Sun Mar 2 15:02:05 2003


Dan wrote:
> Another issue with te PCAnywhere type of connection is traffic. If the
> "client" software is rendering the fancy graphics server-side, and then
> transmitting all the graphics over the wire, it's far more traffic than
the
> occasional K2 command, which would be measured in the teens of bytes, not
> the thousands.

Dan, VNC and other good products allow reduced graphic rendering on the
clientside, reducing bandwitdh. .For some corporates, VNC is used for remote
PC support for homeworkers.

Regards,

Tony

All mail in and out checked lovingly by hand, character by character.

----- Original Message -----
From: "Dan Barker" <[email protected]>
To: "Elecraft" <[email protected]>
Sent: Sunday, March 02, 2003 7:51 PM
Subject: FW: [Elecraft] K2 Remote via the Internet


> Another issue with te PCAnywhere type of connection is traffic. If the
> "client" software is rendering the fancy graphics server-side, and then
> transmitting all the graphics over the wire, it's far more traffic than
the
> occasional K2 command, which would be measured in the teens of bytes, not
> the thousands.
>
> On a website I recently put up, just drawing a graph required a 120k of
> html. So, I transmit just the data (XML Recordset) and the Client builds
the
> chart. It's about 20K.
>
> Chart: http://weather.visioncomm.net/ShowStrip.cfm?Type=1hr
> Raw data: http://weather.visioncomm.net/Weatherdata.cfm?type=1hr
>
> Sorry Mac and such. It's IE6 only for now. It's also honkin' in and
straight
> at the hill!
>
> But it's interesting none the less.
>
> Dan / WG4S / K2 #2456
>
> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]]On Behalf Of Tony Wells
> Sent: Sunday, March 02, 2003 2:34 PM
> To: 73 de M3MPH; [email protected]
> Subject: Re: [Elecraft] K2 Remote via the Internet
>
>
> M3MPH wrote:
>
> > That would also work by landline, and not be dependant on the
> > internet..  There is a shareware type of "pcanywhere" done by bell labs,
> > or at least
>
> I think you mean VNC software. I love VNC as it is open source, runs on
> Linux and Windows and one can tinker with it.
>
> I can see why you think it is a good idea, but unfortunately it it has
> bigger security implications. Firstly the K2 PC will still need to have a
IP
> route inside the home network. Secondly There is a potential hole for
> expoitation via the VNC IP Port. Thirdly, and the most dengerous, once an
> intruder has got past the VNC password, you can then use the K2 PC to
browse
> your home network.
>
> These are the kind of recommendations I would make to anybody that was
> paying for my advice:
>
> 1. Run personal firewall software on the PC in question and only open up
the
> port for the K2 remote software.
> 2. Put a hub or switch between the PC and the rest of your network, and
make
> the power supply to that switched.by remote control somehow - you can get
> Telephone-based or Pager-based power switches. That way you can control
> access to the PC when you are away.
> 3 Ghost the PC for quick restore if it is trashed.
> 4. Ensure your firewall has the latest patches.
> 5. If possible, get a firewall with a DMZ (Demilitarised zone) ethernet
> port. Put the K2 PC on the DMZ connection, but expect to get it trashed.
> 6. Open up the K2 IP Port on the Firewall to the IP address of the K2 PC.
> 7. If your firewall allows it, only allow fixed IP addresses from the
> Internet to access your PC. If you want ANYBODY to access it, then your
can
> leave this step out.
>
> Lastly, if anyone has a K2 remote setup, and are worried about potential
> explotation, I can do some gentle probing to find out if they have a
> problem - but please coordinate this with your ISP first as I will get a
> complaint otherwise!
>
> Regards
> Tony
> M3CJF
> G7IGG
>
> All mail in and out checked lovingly by hand, character by character.
>
>
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