[Info-vax] OSes

[Johnny Billquist]

On 2016-01-18 20:34, Bill Cunningham wrote:
> "Stephen Hoffman" <seaohveh at hoffmanlabs.invalid> wrote in message
> news:n7h3oh$aga$1 at dont-email.me...
>
> ...
>> Since you're a proponent of using the command line, how about using the
>> command line for a while on OpenVMS, until you become more familiar with
>> how OpenVMS and DCL works.   For command line management and operations -
>> which is largely how OpenVMS is managed and operated - there's usually
>> little or no advantage to remote X displays over using ssh directly -
>> without using X forwarding - and a whole lot of added overhead.
> ...
> Well one thing is too I am just learning vms. So I as expected don't know
> how to set VMS  for X or ssh. Johnny is making a good point upthread. If X
> runs over TCP why does it need forwarded? Maybe that's another conversation.

X does not need forwarding in general. There are a couple of reasons why 
people do it anyway.

1) Easy. Doing ssh -X does it all for you, so you do not have to do 
anything more.
2) Security. By tunneling, you do not need to have your X server enabled 
for access by anything outside localhost.
3) Firewalls. If you are behind a fire wall, or NATed, or whatelse, it 
might be that the machine where you are running your X clients might not 
actually be able to contact your X server.
4) Security (again). ssh is encrypted. Since keystrokes travel across X, 
you could sniff peoples keyboards. Tunneling over ssh prevents that from 
being done (easily).

	Johnny

-- 
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