Ultrix-11 Networking

Douglas Taylor dj.taylor4 at comcast.net
Sat Aug 28 12:03:13 CDT 2021

Yes, I did create a new kernel and copy it to the correct place and 
chmod 644 the new unix file.
On my Debian system I can install ftpd and telnetd (they are still in 
the Debian package list) which are the unsecure ones, but I don't know 
how to configure them or start them.  As in, # systemctl  restart ftpd

It turns out to not be a hot topic: "How do I make my Liinux system less 
secure?",  but for us that noodle around with old computers with 
obsolete operating systems it is exactly what we need.  In the past I 
remember using Filezilla to go from a Windows7 machine into a Vax 
without any problem.


On 8/28/2021 12:54 PM, Bill Gunshannon via cctalk wrote:
> On 8/28/21 12:43 PM, Douglas Taylor via cctalk wrote:
>> Its been fun  working with Ultrix-11 and have had success with the 
>> help of the list.  Thanks.  The tape file from Bill Gunshannon will 
>> create a working system.  Yay!
>> I'm at the point of trying to network the SIMH pdp11 Ultrix-11 system.
>> I have a few observations:
>> 1. The youtube video 'Ultrix-11' shows connecting to sunOS systems. 
>> OK, he did this by simply issuing a single ifconfig command.  That 
>> didn't work for me.
> I assume you built a new kernel with the right networking interface
> in it?  :-)
>> 2. Instead, I used the netsetup script supplied with the system, and 
>> had to reboot to get networking up.  I did seem to come up OK.
>> 3. The SIMH FAQ suggests using a 2nd ethernet port, I was able to do 
>> this.  The linux computer I am running SIMH on has 2 ports.
>> 4. The Ultrix-11 telnet ftp are old, unsecure versions, how do you 
>> connect to a modern Linux machine?  The Linux machines refuse the 
>> connections.
> All telnet and ftp connectionms are old and insecure. There is no such
> thing as secure telnet or ftp (or rsh or finger, you get the picture).
> If you wish to go from the Ultrix-11 system to the Linux system you
> will need to explicitly turn on telnetd and/or ftpd.  Or, do the same
> on Ultrix-11 and go the other way.  There is no ssh for Ultrix-11 and
> I seriously doubt there ever could be.
>> 5. I also looked at the tuhs archive.  The Fred build script that 
>> generates a tk50 bootable tape image didn't work for me.  I 
>> substituted a file for the tape device and it caused SIMH to Halt.
> Don't remember what system I bult the tape on but I doubt it was
> an Ultrix-11 system.  Probably a VAX runnning netbbsd under SIMH.
> bill

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