The only "authentication" the radio has, are the following:
  1. The radio can be set to only receive remote transmissions that include a two-digit decimal code; or
  2. The radio can be set to only receive remote transmissions that are addressed to the callsign programmed into the receiving radio (I would recommend this setting).
Any other authentication would have to be provided by a router or firewall.

On 2014-04-26 22:39, Bart Kus wrote:
Any packets on that LAN are considered trusted since they passed authentication.  What's the auth story on the 23cm modems?

--Bart

On 4/26/2014 10:37 PM, Tom Hayward wrote:
On Sat, Apr 26, 2014 at 9:26 PM, Dean Gibson AE7Q <hamwan@ae7q.com> wrote:
At the Snohomish County DEM, place a router (or bridge) between the ID-1 and the 44.24.240.x network.
In this scenario, the ID-1 located at my house would also be connected to a router that acts as though it were directly connected to the 44.24.240.x (or any other) network at the DEM.
We have a router at Snohomish County DEM with an extra port that could be used for this. The subnet there is 44.24.240.128/28. We have another subnet of address pairs set aside for router-to-router links. So as far as networking goes, we could execute your plan. I can't commend about the feasibility of any of the other bits.

Tom