[HECnet] DECnet over IP

[Paul_Koning at Dell.com]

> On Jan 20, 2016, at 10:36 AM, Johnny Billquist <bqt at softjar.se> wrote:
> 
> On 2016-01-20 16:19, Robert Armstrong wrote:
>> P.S.  FWIW, you can also change the port number for UDP too if you don't like the default of 700.  In the case of UDP, though, I think you'd have to use the same port number on both ends.  For TCP it's only the listening (passive) end port number that matters.
> 
> I think I might have over-designed my implementation. :-)
> I can control both the local and remote port for all my connections. And I also need the incoming packets to fully match. Which might be a problem with TCP then, as VMS Multinet do not actually control the originating TCP port... So it will be tricky to specify what it will be.
> I guess I can let incoming connections accept any remote port.

That would make sense.  The typical practice, if you want to limit who can connect, is to limit by IP address, not port.

	paul