[Lilug] Speeding up remote X11 over intercontinental connections

[Justin Dearing]

Lewis,

By rootless, I meant no root window, no background or window manager.

My Xming32 is setup so x11 apps intermingle with my local windows apps and
the win32 gui is my window manager, just the same as you doing ssh -X
REMOTE_HOST xterm on a Linux desktop and the remote xterm showing up next
to the local ones

Justin
 Hey, buddy...

FreeNX is indeed your best bet on the server side.

By "rootless X session" I assume you mean a non-root login from the remote
side vs the server daemon running non-root? In either case, the answer is
yes: you can install FreeNX to run as non-root on the server side, and yes,
you can connect using OpenNX and log in as a non-root user.

Obviously, running the server daemon as non-root can have some limitations
when trying to, for example, log into a session as a user with
higher/different privs than the user account under which the server is
running (LOL), and is mainly useful for extending your own account to a
remote location vs serving a wide range of users logging into the system.

In the setup I had running, it was really only for three users, and each
had about the same privs (fairly limited, too; the main use of the desktop
was to run Firefox and Chromium, and as I say, proxy those outbound
connections through different IPs). I ran FreeNX as a privileged user
mainly for my own convenience. If I would have had a larger group of users
to support, I would have run it in a jail, most likely, which may be
another option for you to consider, depending upon how much control you
have over the remote system.

HTH

On 04/24/15 09:34 pm, Justin Dearing thus wrote :

Lewis,

 Thanks for the reply. I did a quick install of it on my laptop, and I
don't see an option for a rootless X session. I'll have to play with it
some more. I also found FreeNX, which seems to be the NX server, that
google tells me might support a rootless X session.

 Justin




 Justin

On Thu, Apr 23, 2015 at 3:41 PM, Lewis G Rosenthal <
lgrosenthal at 2rosenthals.com> wrote:

> Hey, buddy...
>
> On 04/23/15 03:21 pm, Justin Dearing thus wrote :
>
>> Hello all,
>>
>> Long version: In the UK is a linux boxthat I often ssh into from Hoboken,
>> or Cranford VPNed into Hoboken and develop against. tmux and vim are great
>> for 99% of my needs. Sometimes I just want to run pycharm for
>> reasons.Sometimes I want to run tmux from terminator. This basically works,
>> but there is a lot of latency.
>>
>> My laptop is running Windows 7 with putty and the latest paid for Xming32
>> build. I turned on ssh compression. The server is running centos 6.6 with
>> EPEL, some scientific linux stuff and the pythong 27 and python 33 SCLs.
>> Other than using VNC instead of a rootless X11 server, is there anything I
>> can do to reduce X11 latency? Is there any troubleshooting I could do?
>>
>>  You may recall the setup I had going a couple of years ago for a client
> in India, where we were landing traffic here in the US and then going out
> to the net routed from several physical locations. The VNC latency was a
> killer (there was a single bad router hop in the UK between us which bombed
> on a regular basis, like a black hole).
>
> We ultimately went with OpenNX:
>
> http://opennx.net/
>
> which worked like a charm. Very low latency and low bandwidth, and worked
> consistently well, even over flaky connections.
>
> HTH
>
> --
> Lewis
> -------------------------------------------------------------
> Lewis G Rosenthal, CNA, CLP, CLE, CWTS, EA
> Rosenthal & Rosenthal, LLC                www.2rosenthals.com
> visit my IT blog                www.2rosenthals.net/wordpress
> IRS Circular 230 Disclosure applies   see www.2rosenthals.com
> -------------------------------------------------------------
>
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-- 
Lewis
-------------------------------------------------------------
Lewis G Rosenthal, CNA, CLP, CLE, CWTS, EA
Rosenthal & Rosenthal, LLC                www.2rosenthals.com
visit my IT blog                www.2rosenthals.net/wordpress
IRS Circular 230 Disclosure applies   see www.2rosenthals.com
-------------------------------------------------------------


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