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Re: connection dropping continued

From: Andreas Pflug <pgadmin(at)pse-consulting(dot)de>
To: Markus Wollny <Markus(dot)Wollny(at)computec(dot)de>
Cc: James M Doherty <jim(at)jdoherty(dot)net>,pgadmin-support(at)postgresql(dot)org
Subject: Re: connection dropping continued
Date: 2004-02-18 22:56:10
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgadmin-support
Markus Wollny wrote:

>I think I found out what's causing the connection dropping - it's not
>really the firewall, it's the dynamic NAT routing. Our admin doesn't
>want to set up static NAT routing for the developers though if he can
>help it - he says that this should be reserved for servers. 

Huh, that sounds dubious.
Dynamic NAT for standard users to access the outer world, that's ok, but 
why NAT for access of internal resources?
In a local network or VPN there's no need for NAT, because the private 
address space you're probably using is well known inside the organization.
Seems to be just another example of weird stuff admins are inventing for 
some not-so-well understood reasons.

Additionally, a NAT gateway may not reshuffle its ports/addresses for an 
existing connection, which seems to happen here. I'd call that a bug too 
(the firewall vendor will probably call it a feature, "look, we're 
scrambling the ports to obfuscate data origins..." - well done!)

However, glad you found a workaround.


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