[TUHS] UUCP: working systems, come and get them

Warren Toomey wkt at tuhs.org
Fri Mar 10 12:06:35 AEST 2017

On Thu, Mar 09, 2017 at 06:49:45PM -0700, John Floren wrote:
> I've now got it working and it made me think a little.
> In order to do these "serial ports over TCP" things, we basically are
> putting login prompts out to the Internet. Is it possible to restrict
> things so the only user allowed on ttyN is 'uucp', or should I just
> put in iptables rules to only allow traffic from my UUCP peers?

Yes, I'm trying to work on that. There is a way set some DZ lines
to listen on port Y and the others on port X.

sim> ATTACH DZ X,Line=3,Y,line=4,Z

But there isn't a way to bind to localhost AFAICT. So we should be able to
run uucico only on certain /dev/tty lines, but this still will require
you to iptables block the other port.

Unless someone has a way to bind simh DZ lines to localhost?

Cheers, Warren
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