VNC Server perl script and C++ Code

[steve menard]

>>> numbers with each block being
>>> 300 ports apart, e.g.
>>>       
> 1..99,300..399,600..699 and so on
> Why ports are 300 aparts. is any particular
> reason there?
>   

Yes    Java Port is 100 less than VNC Port both are required free:

  when you use port :0  it is BOTH 5800 & 5900
  when you use port :10  it is BOTH 5810 & 5910
  when you use port :90  it is BOTH 5890 & 5990
X11 [standard 'desktop at the keyboard' uses 6000] --   so you can't use 
6000 or :100

When you use the next batch of available port numbers
  when you use port :300  it is BOTH 6100 & 6200   [so no conflit with 6000]
  when you use port :310  it is BOTH 6110 & 6210
  when you use port :399  it is BOTH 6199 & 6299   [ next port conflict 
with 6200 ]





> 300 ports apart, e.g. 1..99,300..399,600..699 and so on.  Scanning
> straight
> through from 1..1000 should work, but will waste time scanning ranges
> that
> cannot be used because of port clashes.
>
> Regards,
>
> --
> Wez @ RealVNC Ltd
>