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Re: TLS/FTP via OpenBSD NAT

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From: Boris Goldberg <boris@...>
To: Mikel Lindsaar <raasdnil@...>
Cc: <misc@...>
Subject: Re: TLS/FTP via OpenBSD NAT
Date: Friday, October 12, 2007 - 10:17 am

Hello Mikel,


Friday, October 12, 2007, 6:46:20 AM, you wrote:


ML> ... the client wants to be able to connect to an FTP server that

ML> is using TLS.


ML> My first thought of this was "you can't".  however, I was quickly

ML> disabused of this idea by connecting to their server using the program

ML> they use (FileZilla) within a Windows XP instance running inside

ML> Parrallels through a Netlink ADSL modem.  That is two sets of

ML> translation happening!


ML> This got me confused as everything I have read about TLS says this

ML> can't be done.  At least not with NAT.


  I'm confused too. :)

  Why  wont it work over a NAT? You might need to bypass ftp-proxy for that

server (like I did), but only if it's using standard ftp ports (20/21). And

it should be passive, of course.


--

Best regards,

 Boris                            mailto:boris@twopoint.com
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Messages in current thread:
TLS/FTP via OpenBSD NAT, Mikel Lindsaar, (Fri Oct 12, 7:46 am)
Re: TLS/FTP via OpenBSD NAT, Joachim Schipper, (Fri Oct 12, 11:17 am)
Re: TLS/FTP via OpenBSD NAT, Boris Goldberg, (Fri Oct 12, 10:17 am)