> Other serious limitations of Terminal services include:
>   *) The server only works on NT,2k and XP nothing else not even 98.
> 
>   *) Licenses. The client must be using the same version of Windows as
>      the machine you are connecting to, if not it'll work for 90 days
>      then crash until you cough up the price of a new copy of windows.
> 
>   *) It uses NT logons directly without any extra authentication;
>      if you have one bad password on your machine it's toast because
>      Microsoft don't treat 'local root' exploits as a security issue.

...do a google newsgroup search on "teminal services mitm".
Just like VNC - run it over a VPN or tunnel it through SSH.

> If you're interested in the encoding that terminal services uses there's
> an open source client called 'rdesktop'. But I think the only 'encoding'
> advantage that terminal services has is that it saves offscreen pixmaps
> at the client end; including font glyphs.

See the T.128 spec for the encoding.

> One thing that can improve the visible performance with VNC on windows
> is using a Windows 2k/XP driver that slides in between the GDI and the
> physical display driver. This improves the responsiveness and accuracy
> of VNC's detection of changes on the screen. The 'UltraVNC' varient
> does this.
> 
> In general, before VNC came along terminal services was a niche product
> that cost a bomb and sort of worked over a LAN. Now with pressure from
> Citrix at the multi-user level and VNC at the single user it's getting
> to be a useable feature. Though it still costs a bomb for multi-user
> or mixed machines.

VNC and Terminal Services aren't the only solutions.
There are still Laplink and kin which work on Win 9x as well.

Orin.
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