[Info-vax] DECnet Phase IV broken after VSI update

[Craig A. Berry]

On 10/30/21 11:38 AM, Dave Froble wrote:
> On 10/30/2021 2:27 AM, Phillip Helbig (undress to reply) wrote:
>> In article <slhclr$eck$1 at dont-email.me>, Dave Froble
>> <davef at tsoft-inc.com> writes:
>>
>>> Ok, from a TelNet session (sorry Steve, I like TelNet for local 
>>> sessions)
>>
>> Why not LAT?
>>
> 
> The terminal emulator I use, SmarTerm, does not have LAT as a standard 
> option.
> 
> Actually, I'd like to get the company all using something a bit more 
> secure.
> I'm going to look at SSH.

When you do, you may need to have a look at the part of SYLOGIN.COM that
has the SET TERM/INQUIRE command.  In the boilerplate version that comes
with VMS, a rather long list of device types are excluded from running
that command, including "FT" which is what is  used by interactive SSH
connections, so by default, VMS won't know what kind of terminal you
have and lots of stuff doesn't work with terminal type "Unknown."  If
you delete FT from the list, your interactive sessions will start
getting the correct terminal type, but other things that tunnel over SSH
may break.

In my case Kermit from a Linux system tunneled over SSH stopped working.
I had to exclude the account that was doing that from the check, which
is a pretty desperate hack.  If there's a better way to identify
sessions that are using FTDRIVER and have a TT device with a device
class of 66 but are not actual interactive terminal sessions using SSH,
I'd be happy to hear what it is.