[olug] VNCSERVER question

[Jaymz Ringler]

http://www.uk.research.att.com/vnc/faq.html#q53


Which TCP/IP ports does VNC use?
        
        A VNC server listens on two ports. The exact port numbers depend
        on the VNC display number, because a single machine may run
        multiple servers. The most important one is 59xx, where xx is
        the display number. The VNC protocol itself runs over this port.
        So for most PC servers, the port will be 5900, because they use
        display 0 by default.
        
        In addition, VNC servers normally have a small and very
        restricted web server built in, which allows you to connect a
        browser to them and use the Java viewer. This runs on port 58xx.
        Note that this is the HTTP port used for downloading pages and
        applets, but once the applet is running it uses 59xx for VNC
        just like any other viewer. 
        
        The servers can be changed to listen on other ports if, for any
        reason, these are not suitable for you. See the server's
        documentation for more details. Most of the viewers, if given a
        display number larger than 99, will interpret it as a direct
        port number and will not add 5900. See also the next question.
        
        If you are running a viewer in 'listening' mode, where it
        accepts connections initiated by the server, it will listen for
        incoming VNC on port 5500. 
        











On Tue, 2003-09-16 at 11:27, drose.SCANTRON at scantron.com wrote:
> Does anyone know what port VNCSERVER runs on?  And, could someone help me
> write a rule to vncserver through my firewall?
> 
> Thanks.
> 
> Daryl Rose
> Scantron Service Group
> Unix Support Specialist
> drose at scantron.com
> 1-800-228-3628 x3061
> 
> 
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