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RE: How to NAT The FTP-DATA Connection?

To: "LinuxVirtualServer.org users mailing list." <lvs-users@xxxxxxxxxxxxxxxxxxxxxx>
Subject: RE: How to NAT The FTP-DATA Connection?
From: "Robinson, Eric" <eric.robinson@xxxxxxxxxx>
Date: Sun, 24 Dec 2006 07:33:18 -0800
 
Joe said:
>Can you get someone else to plunk down their machine on the network 
>there? Tunnel or no tunnel, you have to find which part isn't 
>working before anyone can use it.


Here's two more traces. The first one is captured on the outside
interface (eth0) of the load balancer. The second is captured on the
inside interface (eth1) during the same conversation. Since both of
these are outside the tunnel, that should give us what we need.

www.pmcipa.com/downloads/tcpdump_lb_eth0.txt
www.pmcipa.com/downloads/tcpdump_lb_eth1.txt

These traces show the same behavior as we observed on the client and
server.

It seems to me that we already know what part is not working. When the
FTP server establishes the FTP-DATA connection, its packets are hitting
the inside interface of the load balancer and are simply being *routed*
instead being *NATed*.

--Eric


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