Re: ipf/ipnat ftp proxy mode for server side?

To: Edgar Fuß <ef%math.uni-bonn.de@localhost>
Subject: Re: ipf/ipnat ftp proxy mode for server side?
From: Darren Reed <darrenr%netbsd.org@localhost>
Date: Tue, 29 Nov 2011 13:48:51 +0100

Edgar Fuß wrote:

Suppose I have an FTP server behind a IPF firewall.
Is there an IPNAT proxy mode for /incoming/ passive-mode FTP connections?
I.e. is there a more intelligent way to allow passive mode than giving a portrange in 
ftpd.conf and a corresponding port >< rule in ipf.conf?


You should be able to use rdr rules in ipnat.conf for that purpose. e.g.

rdr bge0 1.2.3.4/32 port ftp -> 1.2.3.4 port ftp tcp proxy ftp

Darren

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