From: Mart Frauenlob <mart.frauenlob@chello.at>
To: netfilter@vger.kernel.org
Subject: Re: passive mode ftp high ports driving me nuts
Date: Fri, 08 Jan 2010 17:40:10 +0100 [thread overview]
Message-ID: <4B475FEA.9050601@chello.at> (raw)
In-Reply-To: <4B4758C2.7050607@gmail.com>
On 08.01.2010 17:09, MargoAndTodd wrote:
>>> It is the "--sport $unassgn --dport $unassgn" that is killing me.
>>> How do I restrict the last three to just passive mode ftp?
>>>
>
> On 01/08/2010 02:24 AM, Mart Frauenlob wrote:
>> use the 'helper' match extension. i.e: -m helper --helper ftp.
>> if you need to distinguish between active and passive, you still can use
>> the port and state matches for that.
>
> Can you point me to the directions/manual for the
> "-m helper --helper ftp" so I can figure out what
> exactly it is doing and how to install it?
>
> Many thanks,
> -T
iptables -m helper -h
man iptables
find /lib/modules/ -name '*helper*' -exec modinfo '{}' \;
http://www.frozentux.net/iptables-tutorial/iptables-tutorial.html#HELPERMATCH
if your iptables / kernel don't have support for the helper match ->
time to upgrade!?
regards
Mart
next prev parent reply other threads:[~2010-01-08 16:40 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-07 19:13 passive mode ftp high ports driving me nuts MargoAndTodd
2010-01-08 10:24 ` Mart Frauenlob
2010-01-08 16:09 ` MargoAndTodd
2010-01-08 16:40 ` Mart Frauenlob [this message]
2010-01-09 2:59 ` MargoAndTodd
2010-01-09 13:55 ` Mart Frauenlob
2010-01-09 14:04 ` Mart Frauenlob
2010-01-09 16:33 ` MargoAndTodd
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