My understanding of NAT is that a router must be able to associate multiple
connections (possibly connectionless UDP conversations) between its LAN clients
and external stations which can see only the router as a single entity. So, if
a UDP datagram arrives from a station on the WAN the router must be able to
“remember” which of its clients it should be sent to.
Port forwarding is a fixed configuration, where a connection on a particular
port (e.g. 5900 or 5500) is always routed to a particular client. The most
helpful routers allow the port to be translated, so you can connect to the
router on port 8903 or port 8904 and the router will send the connection to
10.0.0.3 or 10.0.0.4 respectively, while translating the port on the LAN side
to 5900.
Caveat: I’m no networking guru!
Philip Herlihy
From: Dale Eshelman [mailto:[email protected]]
Sent: 27 September 2009 00:44
To: Philip Herlihy
Cc: [email protected]
Subject: Re: No-IP and Real VNC on multiple PC's
I am familiar with the link. I just thought there was something special you
were addressing I did not know. I do not know a router that does not have port
forwarding.
I just thought the term "NAT" referenced something special regarding routers.
So I guess "Net Address Translation" is the same as port forwarding.
On Sep 26, 2009, at 05:09 AM, Philip Herlihy wrote:
You may find this helpful:
http://portforward.com/
Philip Herlihy
-----Original Message-----
From: [email protected] [mailto:[email protected]] On
Behalf Of Dale Eshelman
Sent: 26 September 2009 02:55
To: Christopher Woods
Cc: 'Bob Grabbe'; [email protected]
Subject: Re: No-IP and Real VNC on multiple PC's
Can you provide an example of of the setting and location of setting
on the router that need to take place for NAT? What must a router have
in the settings to be a NAT router?
Thanks
On Sep 25, 2009, at 12:28 PM, Christopher Woods wrote:
I've done this before, although only with two pc's behind the
same router.
For example, the router is set up to forward port 5900 to
pc1, with the ip of 192.168.1.50 and port 5901 to pc 2 with
the ip of 192.168.1.51.
PC1 is set in vnc to listen on port 5900 and pc2 is set to
listen on port 5901. You set this on the connections tab of
the options for the vnc server on each pc.
If I want to connect to pc1, I run the vnc client ( from work
) to the No-ip address:5900, if I want to connect to pc2,
it's the No-ip address:5901.
With a good NATting router, having to change the listen ports on
each PC
*shouldn't* be necessary, but it can make things simpler. (however
if you're
connecting from those machines via a LAN it adds the requirement to
specify
the port as well, which I dislike...)
If the 2Wire can only directly map incoming traffic to the
equivalent port
on the internal machine, then Roberto will have to do that. As long
as his
router supports restricted or full cone NAT and allows for differing
local
and remote port assignments, he should only have to make his changes
on the
router (all the LAN PCs will quite happily work with the default
settings).
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Dale Eshelman
[email protected]
ShopToEarn (Dist ID 105985)
http://www.ShopToEarn.net/DaleEshelman
MonaVie (Distr ID 1316953)
http://www.monavie.com/Web/US/en/product_overview.dhtml
The closer I get to the pain of glass in Windoz, the farther I can see
and I see a Mac on the horizon.
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_______________________________________________
VNC-List mailing list
[email protected]
To remove yourself from the list visit:
http://www.realvnc.com/mailman/listinfo/vnc-list
Dale Eshelman
[email protected]
ShopToEarn (Dist ID 105985)
http://www.ShopToEarn.net/DaleEshelman <http://www.ShopToEarn.net/Eshelman>
MonaVie (Distr ID 1316953)
http://www.monavie.com/Web/US/en/product_overview.dhtml
The closer I get to the pain of glass in Windoz, the farther I can see and I
see a Mac on the horizon.
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