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Date:      Sun, 2 Jul 2000 23:35:53 +0200
From:      Karsten Patzwaldt <karsten@gedankenpolizei.de>
To:        freebsd-net@freebsd.org
Subject:   NAT and PPPoE
Message-ID:  <20000702233552.A862@odysseus.gedankenpolizei.de>

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Hi there!

OK, I finally got a DSL connection, and I set up a FreeBSD-router as a
router, using NAT to give access to the Internet for my whole network.
That works so far, I can connect via SSH, POP3 and so on. But FTP and
HTTP make problems. Those two protocols can be used from the router
without any problems, but the other computers on the LAN time out when
trying to connect to any server. They _are_ able to connect to to the
webservers of my provider (the german T-Online), but I don't reach any
other servers.

OK, there might be a proxy enforcement at T-Online, but this would not
explain why I can connect to FTP- and HTTP-servers from the router
without any problems.

I tried to use the -nat option of PPP and natd, both with the same
result. I set up a proxy for HTTP and FTP which both work, but this is
not what I want.

There are 2 other things that struck me. First, HTTP works with other
ports than 80. There's a server at port 70 which worked just fine.
Second, I can use a proxy server at T-Online and use this to go online.

But looking at the router, there must be a possibility to use the
computers behind the NAT-router without a proxy server because the
router doesn't need a proxy, so why should the others need one?

If you've got any ideas or need some more information on my
configuration, please contact me directly, as my overall mail volume
doesn't allow me to follow -net. Thank you.

	-- Karsten
-- 
perl -e 'use Math::BigInt;$a=new Math::BigInt 1;print"Zahl: ";$b=<>;$a*=
$b--while$b;print"Ergebnis: $a, Stellen: ".(length($a)-1)."\n"'


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