[Simh] The Ultimate SIMH VAX Networking Challenge!

[Marc Chametzky]

> My end goal is to have a single host system, with a single physical
> Ethernet, hosting two (or more!) SIMH VAX instances. Each SIMH VAX
> should be able to communicate with all the others, and with the host,
> and all of them should be reachable from the public Internet.

I don't know whether this would be cheating in your "challenge", but one 
way to do this would be to run all this under a hypervisor like VMware ESXi.

With that, you could set up multiple virtualized hosts if you want, each 
of which could have multiple virtual network adapters. This gets around 
the traditional problem of the host not being able to talk to the guest 
over the same network adapter. With ESXi you can control just how these 
virtual network adapters are bridged together.

I have something like this set up myself, although I have it such that 
the two virtual network adapters are on different VLANs so that the 
hosts are on my private LAN, while the VMS or TOPS-20 guest is running 
on a semi-DMZ LAN.

--Marc