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Date: Tue, 17 Jun 2003 09:08:07 -0400
From: Bill Moran <wmoran@potentialtech.com>
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To: Andrew Thomson <ajthomson@optushome.com.au>
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Subject: Re: restrictive ipfw ruleset and ftp
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Andrew Thomson wrote:
> any suggestions would be great.
> 
> i have a restrictive ipfw ruleset that works great.. it only allows
> incoming connections that i allow and outgoing connections allow. i have
> a list of ports that i let my users go out on: 80, 22, 143, 443 etc
> etc..
> 
> All the stuff they might need to do.
> 
> how can i handle passive ftp though?
> 
> i can let 21 out, but when the remote ftp server says use this x high
> port.. i block that because it's not in my list. so what can i do to get
> around this..
> 
> not totally familiar with it, but is this what fw_punch is for within
> nat??

That's what it's designed for.  I've never used it so I can't verify how
well it works.

-- 
Bill Moran
Potential Technologies
http://www.potentialtech.com