[Simh] Vax.exe emulator and Multinet network configuring

Henry Bent henry.r.bent at gmail.com
Thu May 9 15:15:06 EDT 2019


There is such a thing as promiscuous mode for 802.11, though its usage is
generally considered to be for harmful purposes and I don't think a
discussion of it here is appropriate.  If you want to do such a thing you
will need to be careful in your selection of a wireless interface, and
googling is your friend.

-Henry

On Thu, 9 May 2019 at 15:11, Johnny Billquist <bqt at softjar.se> wrote:

> Repeat after me: WiFi is not ethernet... :-)
>
> What you are trying to do essentially does not work. simh is essentially
> trying to set the interface in promiscuous mode, and fake a second mac
> address on the interface. This works just fine on ethernet, but it does
> not at all work on WiFi, where your AP knows what MAC address you have,
> and will not send packets for another MAC address to your WiFi controller.
>
>    Johnny
>
> On 2019-05-09 16:00, Jonathan Welch wrote:
> > The vms systems on our campus are about to be shut down.  My former
> > boss and I would like to still have access to our files, so I've moved
> > an image of a vax system disk into simh.
> >
> > He is a networking expert and I am no slouch, but neither of us can
> > figure out why we cannot establish any kind of network connection
> > outside of the simh.
> >
> > I've looked back in the archives for help but have only found people
> > with linux systems or messages of success with UCX.
> >
> > This morning I upgraded from Multinet 4.3 to 5.2 and tried to set up
> > DHCP but that did not work either.
> >
> > Npcap is installed.
> >
> > If I set my mac address to be the same as that of the host laptop I
> > can use wireshark to see pings coming out from the vax but there are
> > no responses.
> >
> > I've disabled decnet from starting up to avoid the mac address from
> > being changed.
> >
> > Some guidance in the right direction would be greatly appreciated.
> >
> > ----------
> >
> >  From my vax.ini file:
> > set xq mac=08-24-d7-ca-1f-40
> > att xq eth3
> >
> >  From the simh prompt:
> > sim> sho eth
> > ETH devices:
> >   eth0   \Device\NPF_{8E7FBCD3-67EB-4A59-8E35-6713CAB729FA} (Local Area
> > Connection 2)
> >   eth1   \Device\NPF_{EE67D248-AACC-4A29-99EE-2B84EA08B5EF} (VMware
> > Network Adapter VMnet8)
> >   eth2   \Device\NPF_{7287895B-5B94-43ED-8AA8-1FF910EA836B} (Wireless
> > Network Connection 2)
> >   eth3   \Device\NPF_{DC3CD7F8-4BD9-4610-B8DF-20AC5FBD56FC} (Wireless
> > Network Connection)
> >   eth4   \Device\NPF_NdisWanIp                              (NdisWan
> Adapter)
> >   eth5   \Device\NPF_NdisWanBh                              (NdisWan
> Adapter)
> >   eth6   \Device\NPF_{B1392056-6E69-421B-9814-6011441195C2} (Wireless
> > Network Connection 3)
> >   eth7   \Device\NPF_NdisWanIpv6                            (NdisWan
> Adapter)
> >   eth8   \Device\NPF_{C7140267-68CB-485A-B343-5751B1865242} (VMware
> > Network Adapter VMnet1)
> >   eth9   \Device\NPF_{795E27CA-60AA-4A1E-AAB0-99FB62537868} (Npcap
> > Loopback Adapter)
> >   eth10  \Device\NPF_{62CD8A59-7E13-401A-90AB-3CFBC37554E8} (Local Area
> > Connection)
> >   eth11  nat:{optional-nat-parameters}                      (Integrated
> > NAT (SLiRP) support)
> >   eth12  udp:sourceport:remotehost:remoteport               (Integrated
> > UDP bridge support)
> > Npcap version 0.994, based on libpcap version 1.9.1-PRE-GIT
> > Open ETH Devices:
> >   XQ     eth3 (Wireless Network Connection)
> > Ethernet Device:
> >    Name:
> \Device\NPF_{DC3CD7F8-4BD9-4610-B8DF-20AC5FBD56FC}
> >    Reflections:             1
> >    Self Loopbacks Sent:     2
> >    Self Loopbacks Rcvd:     2
> >    Host NIC Address:        00:24:D7:CA:1F:40
> >    Packets Sent:            2
> >    Packets Received:        26
> >    Asynch Interrupts:       Disabled
> >    Read Queue: Count:       24
> >    Read Queue: High:        24
> >    Read Queue: Loss:        0
> >    Peak Write Queue Size:   0
> >    BPF Filter: (((ether dst 08:24:D7:CA:1F:40) or (ether multicast)) and
> not ((et
> > her src 08:24:D7:CA:1F:40))) or ((ether dst 08:24:D7:CA:1F:40) and
> (ether src 08
> > :24:D7:CA:1F:40)) or ((ether dst 00:24:D7:CA:1F:40) and (ether proto
> 0x9000))
> > sim>
> >
> > Multinet settings
> > MultiNet Network Configuration Utility V5.2(107)
> > [Reading in MAXIMUM configuration from MULTINET:MULTINET.EXE]
> > [Reading in configuration from MULTINET:NETWORK_DEVICES.CONFIGURATION]
> > NET-CONFIG>sho
> > Interface                                Adapter     CSR Address
> Flags/Vector
> > ---------                                -------     -----------
> ------------
> > se0      (Shared VMS Ethernet/FDDI)       -NONE-        -NONE-
>  -NONE-
> >            [TCP/IP: 10.0.0.150, IP-SubNet: 255.255.255.0, IP-Broadcast:
> > 10.0.0.255]
> >            [VMS Device: XQA0, Link Level: Ethernet ]
> >            DHCP Client for the interface is enabled
> >
> >
> > Official Host Name:             vax1
> > Default IP Route:               10.0.0.1
> > Domain Nameserver:              127.0.0.1
> > Timezone:                       EST
> > Timezone Rules:                 US/EASTERN
> > Load UCX $QIO driver:           TRUE
> > Load PWIP (Pathworks) driver:   TRUE
> > DHCP Client Flag:               1
> > NET-CONFIG>
> > _______________________________________________
> > Simh mailing list
> > Simh at trailing-edge.com
> > http://mailman.trailing-edge.com/mailman/listinfo/simh
> >
>
> --
> Johnny Billquist                  || "I'm on a bus
>                                    ||  on a psychedelic trip
> email: bqt at softjar.se             ||  Reading murder books
> pdp is alive!                     ||  tryin' to stay hip" - B. Idol
> _______________________________________________
> Simh mailing list
> Simh at trailing-edge.com
> http://mailman.trailing-edge.com/mailman/listinfo/simh
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