WinVNC 3.3.3R1 - some questions

[Quentin Stafford-Fraser]

Michael Herger wrote:

> Is that port 5500 only used to establish the connection? All the
> remaining communication will use «normal» ports 59xx?

No - the connection, once established, is used directly.  No new
connections are formed.

Remember, behind the scenes, servers almost always accept connection on
a listening port and immediately hand them off to a new socket so that
the port is free again. All servers do this, not just VNC servers. This
is hidden from you, so it looks as if many concurrent connections can be
made to a particular port.

But you can't really have two services sharing one port number. So VNC
servers listen on 59xx, and viewers listen on 55xx. On Unix machines,
you can actually have more than one viewer listening at once on 5500,
5501 etc, but this is pointless on Windows where you only have one
display, and WinVNC currently can only make connections to a viewer
listening on 5500.    

Quentin
-- 
----------------------------
Dr Quentin Stafford-Fraser
AT&T Laboratories Cambridge
http://www.uk.research.att.com/~qsf

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