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Re: [GNUnet-developers] using gnunet from behind NAT

From: Christian Grothoff
Subject: Re: [GNUnet-developers] using gnunet from behind NAT
Date: Thu, 11 Jul 2002 11:21:01 -0500
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On Saturday 06 July 2002 02:03 pm, andrew wrote:
> I guess my question is:  Can gnunet handle an external IP address that
> changes every few hours and NAT at the same time?

Yes, if you have a DNS server that always has the latest IP address. Then you 
can tell GNUnet to query the DNS server periodically for IP updates. The NAT 
box must also forward inbound traffic to the real host. 

> Since the answer to that could be: No!  Can I use some form of traceroute
> command to automatically update the IP?

Principally, yes. But for that, code would have to be written. 

> Further Info That might help
> ______________________
> Can I use gnunet?  Yes it works OK locally.
> BUT I can't see anything on the internet.  I use an ADSL modem on
> gnu/linux/redhat with an external IP address that changes with each dialup.
> My local addresses are 192.168..... and get to the internet by NAT, I'm
> told.
> I'm trying 0.4.2 (beta) and the error(?) shown is "warning: not connected
> to any hosts, can not forward query" when "gnunet-search GPL" is done

The more frequent your NAT box changes its IP the harder it will be for you to 
get connections to other hosts. I'll put on my list an addition to 
gnunet-stats to print the external IP that is currently advertised by GNUnet.

You may also want to use a fairly small number for HELOEXPIRES. 

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