I'm not sure that I can answer your specific question but here is how IP
adressing works.  There are two addressing modes; static and dynamic.

In static mode you are assigned an IP address and it is unique so anything
sent to that IP address comes to your computer.  It is your address and
you always get the same address (until you relinquish it and then it may
be assigned to someone else).

Dynamic address depends on a protocol called DHCP (Dynamic Host
Configuration Protocol) and you are dynamically assigned an address from a
pool of available addresses ON YOUR NETWORK.  The addresses are USUALY 
assigned from the pool (Internet Standard) of private addresses, starting
with 192 or 168 as the first three digits of the address.  (ISPs usually
use their own IP addresses).  DHCP often assigns the same IP address to
the same system (I can explain why that happens but it is not really
relevant here) with the result that a lot of times things work for a while
and then stop working.

It sounds like maybe one of the computers is using a local address which
is not 'visible' to the other computer (Local IP addresses are not passed
over the Internet).  The solution is to have your ISP assign static
addresses to each computer and use them.

Sorry if this answer is long-winded and didactic.  I will be glad to share
my networking knowledge if it helps and you contact me directly.

Alan Watchorn
Eshelman Appraisals, Inc.
[EMAIL PROTECTED]
Phone (760) 692-4302
Fax (760) 692-4303

chas \(kysdaddy\) said:
>  I am having this same issue, the only difference is that the machine that
> I
> am trying to reach is behind a win 2003 sbs server. I'm assuming that it
> is
> an addressing or a port forwarding issue but can't find the fix/answer.
>
>
> Davide Cerbo davidecerbo "at" virgilio.it
> Sun Aug 1 13:43:01 2004
>
> Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]
>
> ----------------------------------------------------------------------------
> ----
>
> How can I connect to a PC in a LAN over Internet?
> Example:
> If the ip of the server of the LAN is for example: 89.123.256.44
> and the ip of the computer with VNC server is for example: 168.123.0.20
> How can I do?
>
> Thanks.
> Davide
> _______________________________________________
> VNC-List mailing list
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> http://www.realvnc.com/mailman/listinfo/vnc-list
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