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Re: PHP socket and NAT [message #177140 is a reply to message #177138]

Thu, 23 February 2012 14:25

Captain Paralytic
Messages: 204
Registered: September 2010

Karma:

Senior Member

On Feb 23, 1:53 pm, The Natural Philosopher <t...@invalid.invalid>
wrote:
> Captain Paralytic wrote:
>> On Feb 23, 1:09 pm, "sl@exabyte" <sb5...@hotmail.com> wrote:
>>>> I'm assuming you're talking about talking to two people on a remote
>>>> LAN, and that LAN uses NAT to connect to the internet.
>>>> The first question is - who's connecting to whom?
>>>> If the remote systems are connecting to you, then there's no problem.
>>>> However, if you are trying to connect to them, there's a lot more work
>>>> involved. The router must be set up with port forwarding and you have
>>>> to connect to the correct port to forward to the proper machine.
>>>> You can find more information in a TCP/IP newsgroup.
>>> I am thinking of the scenario where I am talking to 2 persons via the
>>> internet, and these 2 persons are in the same LAN, something like chatting.
>>> So the problem in my mind is that these 2 persons have the same IP.
>> No they don't, the local network will not allow it. They will have
>> different IP addresses.
>
> They do as far as the outside world is concerned.
But that is as far as the outside world is concerned. They will still
not have the same IP addresses.

> And the network doesn't *disallow* it inside the NAT area either, it
> simply stops things working for those two machines :-)
The local network will not allow 2 machines with the same IP address
to function on it (communication wise)

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[Message index]

		PHP socket and NAT By: SL on Thu, 23 February 2012 08:58
		Re: PHP socket and NAT By: Erwin Moller on Thu, 23 February 2012 10:32
		Re: PHP socket and NAT By: Captain Paralytic on Thu, 23 February 2012 10:41
		Re: PHP socket and NAT By: Erwin Moller on Thu, 23 February 2012 10:53
		Re: PHP socket and NAT By: Erwin Moller on Thu, 23 February 2012 10:52
		Re: PHP socket and NAT By: SL on Thu, 23 February 2012 13:04
		Re: PHP socket and NAT By: The Natural Philosoph on Thu, 23 February 2012 13:37
		Re: PHP socket and NAT By: The Natural Philosoph on Thu, 23 February 2012 11:40
		Re: PHP socket and NAT By: Jerry Stuckle on Thu, 23 February 2012 13:00
		Re: PHP socket and NAT By: SL on Thu, 23 February 2012 13:09
		Re: PHP socket and NAT By: Captain Paralytic on Thu, 23 February 2012 13:19
		Re: PHP socket and NAT By: The Natural Philosoph on Thu, 23 February 2012 13:53
		Re: PHP socket and NAT By: Captain Paralytic on Thu, 23 February 2012 14:25
		Re: PHP socket and NAT By: Michael Fesser on Thu, 23 February 2012 17:28
		Re: PHP socket and NAT By: The Natural Philosoph on Thu, 23 February 2012 20:42
		Re: PHP socket and NAT By: M. Strobel on Fri, 24 February 2012 10:58
		Re: PHP socket and NAT By: SL on Thu, 23 February 2012 16:03
		Re: PHP socket and NAT By: The Natural Philosoph on Thu, 23 February 2012 20:44
		Re: PHP socket and NAT By: M. Strobel on Fri, 24 February 2012 11:07
		Re: PHP socket and NAT By: The Natural Philosoph on Fri, 24 February 2012 13:22
		Re: PHP socket and NAT By: Tim Streater on Fri, 24 February 2012 14:20
		Re: PHP socket and NAT By: The Natural Philosoph on Fri, 24 February 2012 15:39
		Re: PHP socket and NAT By: Tim Streater on Fri, 24 February 2012 18:53
		Re: PHP socket and NAT By: The Natural Philosoph on Fri, 24 February 2012 21:04
		Re: PHP socket and NAT By: Tim Streater on Fri, 24 February 2012 21:41
		Re: PHP socket and NAT By: Peter H. Coffin on Sun, 26 February 2012 18:50
		Re: PHP socket and NAT By: Erwin Moller on Thu, 23 February 2012 13:37
		Re: PHP socket and NAT By: The Natural Philosoph on Thu, 23 February 2012 13:50

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