VNC Ports

Mac Reiter reiter "at" nomadics.com
Mon, 26 Feb 2001 15:46:31 +0000


>Hi Brett,
>
>VNC requires two ports to go in and out 5800 and 5900. Will not work any
other way.
>
>Mario

Sorry, but if you don't know what you're talking about, PLEASE don't send
in answers.  People get confused enough without deliberately presenting
false information.

5900 + <display number> (or 59xx in shorthand) is the ONLY required in/out
port.  That is the VNC protocol port.

58xx is a convenience, and the only thing it does is serve up a Java
version of VNCviewer, which then connects (using the standard 59xx port,
just like all other viewers) back to the server.  As long as you have a
normal executable version of VNCviewer, you can block 58xx with impugnity.

I have also seen people asking about port 80, which VNC servers do NOT use
at all.  That confusion arises because of the mini-HTTP server that is
running at 59xx.  Many people see "HTTP" and immediately assume it is at
port 80.

Mac
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