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List:       centos
Subject:    Re: [CentOS] Default CentOS(Redhat) iptables, Secure?
From:       "Kai Schaetzl" <maillists () conactive ! com>
Date:       2005-11-30 16:31:28
Message-ID: VA.00001ef5.038def0a () virtual-access ! org
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Aleksandar Milivojevic wrote on Wed, 30 Nov 2005 09:16:34 -0600:

> For example, the correct way to 
> allow active FTP data connection, you would allow packet in only if it is sent 
> from port 20 (-p tcp --sport 20), *and* it is connection to high port 
> (preferrably in 49152-65534 range, although some broken FTP servers use entire 
> 1024-65534 range, but definettely high port) (--dport 49152:65534) *and* 
> related to existing FTP control channel (-m state --state RELATED) 
> *and* it was 
> marked as related by ftp helper module (-m helper --helper ftp).

Is that "helper" identical with the ip_conntrack_ftp module or is this something 
different?

Kai

-- 
Kai Schätzl, Berlin, Germany
Get your web at Conactive Internet Services: http://www.conactive.com
IE-Center: http://ie5.de & http://msie.winware.org



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