Terminal Services v. VNC

Tony tony "at" instaview.com
Sat Jan 3 15:14:00 2004


While it may be faster for users over dialup, it does not
do all that vnc does. Across a lan, it's a wash.

There are several other issues, the main ones being:

1 - licensing, you have to have the right combination of windows
	products to be legal. ( or even to function )
2 - Multi-platform, vnc isn't restricted to 2 platforms ( for
	the 'server' side as TS is. VNC works for most any major 
	OS, in any combination.

( oh and the http applet is cool if you don't want to carry
around a client disk with you all the time )

> 
> Message: 12
> Date: Sat, 3 Jan 2004 02:10:21 -0600 (CST)
> From: Mike Miller <mbmiller "at" taxa.epi.umn.edu>
> To: VNC List <vnc-list "at" realvnc.com>
> Subject: Terminal Services v. VNC
> 
> A friend sent me a message (not to this list), which is appended
below.
> He claims that Windows Terminal Services will do for me what VNC does,
but
> Terminal Services runs much faster.  I'm wondering if he is correct.
I
> think he's wrong about bmp encoding, for one, but is any of it
correct?
> 
> Thanks in advance!
> 
> Mike
> 
> --
> Michael B. Miller, Ph.D.
> Assistant Professor
> Division of Epidemiology
> and Institute of Human Genetics
> University of Minnesota
> http://taxa.epi.umn.edu/~mbmiller/
> 
> 
> On Sat, 3 Jan 2004, a friend wrote (off list):
> 
> > VNC sends compressed bmp data of changed pixels when a screen change
> occurs.
> > Terminal Service operates lower in Windows GDI and is much faster.
> Example -
> > I type "Hello World" in wordpad. In a VNC session it polls the
window,
> > decides which pixels changed, grabs the bmp data for those pixels,
> > compresses it and sends it. Terminal Services says "Hello World" was
> entered
> > into this app - display it. The difference is very significant.
> >
> > As an example - VNC is sluggish via broadband while Terminal Service
is
> > substantially faster over a 28.8 modem (I've seen this).
> >
> > I don't know about X - though I know Windows-based X servers are
> typically
> > slower than Linux. Typically when I have to use Cygwin I'm coming
over
> an
> > IPSec VPN - which I think it frigging my MTU and causing me
> > fragmentation-induced performance hits.
> 
> --__--__--