Re: SIMH networking

<sampsal@xxxxxxxxx> wrote:
I think you must have meant 7.3. What do you see when you type
$ TCPIP ifconfig ze0 ?

If it isn't ze0 type
$ tcpip sho int
I did actually mean 3.7-1; that's the SIMH version, the VMS version is
7.3-1.

I think Tom was right - the VMS version is most likely 7.3 (the last VMS
VAX version there is).

Anyway, the TCP/IP stuff SEEMS to be correctly configured
....
DNS resolution and routing to the outside seems to work
....
And I can ping other machines on the local subnet
....
However, when I try to ping the machine that the SIMH VAX emulator is
running on, it doesn't get through:

This is because of the libpcap used for network access. It only "sees"
inbound packets (and filters those for the MAC address of the SIMH
network interface), but it does not see outbound packets. For SIMH
to be able to talk to its host system, you must
- either use a second host network interface and create a loop
- or create a loop using TUN/TAP interfaces in the host system.

The latter approach is described e.g. at
http://www.itsecuritygeek.com/index/itsgeek/comments/simh-networking/
No idea whether it works with MAC OS X.

BTW, when using MS Windows: the OpenVPN project contains a TUN/TAP
driver that can be used for that purpose; http://openvpn.net/ .

HTH,
Martin
--
One OS to rule them all | Martin Vorlaender | OpenVMS rules!
One OS to find them | work: mv@xxxxxxxxxxxxxx
One OS to bring them all | http://www.pdv-systeme.de/users/martinv/
And in the Darkness bind them.| home: martin.vorlaender@xxxxxxxxxxx
.