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Date:      Mon, 13 May 2002 15:57:04 +0200
From:      Nelis Lamprecht <nelis@brabys.co.za>
To:        freebsd-questions@freebsd.org
Subject:   Re: ipfw problems
Message-ID:  <5.1.0.14.2.20020513155418.01269d30@192.96.48.11>
In-Reply-To: <3CDFC545.1040906@potentialtech.com>
References:  <5.1.0.14.2.20020513152557.01269d30@192.96.48.11>

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my ruleset looks something like this:

add 00301 check-state
add 00302 allow tcp from any to any established
add 00303 allow tcp from any to any out setup keep-state
add 00304 allow tcp from any to $myip 20,21 setup

is that correct? I can still ftp to my own server but not from ports 
collection.

At 03:53 PM 2002/05/13 Monday, you wrote:
>Nelis Lamprecht wrote:
>>Hi
>>In my ipfw ruleset I have got everything set to "allow tcp from any to 
>>$myip $myports setup". Would the 'setup - TCP packets only.  Match 
>>packets that have the SYN bit set but no ACK bit.'  deny me from ftp to 
>>certain servers ?
>
>Do you also have "pass tcp from any to any established" somewhere in
>your ruleset?  The "setup" one matches initial packets, if you don't
>have an "established" rule, subsequent packets will be denied.
>
>>Even with ports 20, 21 set to open when I enable my firewall it won't 
>>allow me to download anything  through the ports collection.
>
>You have to do the ftp in passive mode, _after_ your rules are set up
>correctly.
>If you're still having trouble, post your _entire_ ruleset to the list,
>your brief description of it isn't good enough for anyone to understand
>the interaction of rules in your ruleset.
>
>--
>Bill Moran
>Potential Technology
>http://www.potentialtech.com


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