[comp.os.vms] DecServer 200/300 puts us into PASSALL mode sometimes

jdc@rama.UUCP (James D. Cronin) (11/08/90)

Followups to: comp.os.vms

We have a number of DecServer 200's and 300's used to connect to
a number of Vax/VMS, DecStation and Unix machines.  We use the
Ultrix LAT/Telnet gateway service to connect to Unix machines:
	"CONNECT TELNET NODE FRED DESTINATION SPOT"

For some unknown reason this puts us into passall mode more or
less at random.  Any ideas on why this happens?

Thanks...Jim Cronin
jdc@rama.sc.harris.com

D. Allen [CGL]) (11/08/90)

>We have a number of DecServer 200's and 300's used to connect to
>a number of Vax/VMS, DecStation and Unix machines.  We use the
>Ultrix LAT/Telnet gateway service to connect to Unix machines:
>	"CONNECT TELNET NODE FRED DESTINATION SPOT"
>For some unknown reason this puts us into passall mode more or
>less at random.  Any ideas on why this happens?

Any program on recent Ultrix that does "stty raw" sets the port to PASSALL.  
This includes the getty running at login time that reads your userid.

I asked on Oct 24 in comp.unix.ultrix how to turn it off; nobody knows.
-- 
-IAN! (Ian! D. Allen) idallen@watcgl.uwaterloo.ca idallen@watcgl.waterloo.edu
 [129.97.128.64]  Computer Graphics Lab/University of Waterloo/Ontario/Canada

grr@cbmvax.commodore.com (George Robbins) (11/09/90)

In article <1990Nov8.070438.6592@watcgl.waterloo.edu> idallen@watcgl.waterloo.edu (Ian! D. Allen [CGL]) writes:
> >We have a number of DecServer 200's and 300's used to connect to
> >a number of Vax/VMS, DecStation and Unix machines.  We use the
> >Ultrix LAT/Telnet gateway service to connect to Unix machines:
> >	"CONNECT TELNET NODE FRED DESTINATION SPOT"
> >For some unknown reason this puts us into passall mode more or
> >less at random.  Any ideas on why this happens?
> 
> Any program on recent Ultrix that does "stty raw" sets the port to PASSALL.  
> This includes the getty running at login time that reads your userid.
> 
> I asked on Oct 24 in comp.unix.ultrix how to turn it off; nobody knows.

In 99 out of 100 cases this is the correct behavior - to support unix
"raw" mode semantics, the server must **temporarily** enter passall
mode.  Since servers are not hard-wired terminal, there may be a few
cases where this doesn't give the intended result, but you break a
lot more stuff by not having it be the **default** behavior.

Please consider carefully before bitching about this, it's been broken
before (some 3.x releases) and took a long time to get it right again.

If the login behavior causes you distress, then what you really want
is /etc/ttys control of raw vs cbreak vs cooked mode for the prompt,
not LAT changes.

-- 
George Robbins - now working for,     uucp:   {uunet|pyramid|rutgers}!cbmvax!grr
but no way officially representing:   domain: grr@cbmvax.commodore.com
Commodore, Engineering Department     phone:  215-431-9349 (only by moonlite)