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Date:      Thu, 18 Jul 2002 12:00:21 +0200
From:      "nascar24" <nascar24@home.nl>
To:        <net@freebsd.org>
Subject:   FXP behind firewall
Message-ID:  <11c801c22e41$edc7c740$0200a8c0@winxp>

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Hello,

I have enabled AllowForeighAddress is proftpd.conf but still, people can't
fxp to my ftp site.

I think it has something to do with my IPFW rules. Here are the rules.

# allow loopback traffic
add 100 allow ip from any to any via lo0

# protect loopback address
add 200 deny ip from 127.0.0.1 to any
add 249 deny ip from any to 127.0.0.1

# block spoofs
add 400 deny log ip from me to any in via ed0

# enable NATD
add 425 divert 8668 ip from any to any via ed0

# check dynamic rules
add 450 check-state

# make dynamic entries for all outgoing traffic
add 500 allow tcp from me to any 1024-65535,21,22,25,80,110,123,443,666
keep-state out via ed0
add 550 allow udp from me to any 21,22,80,53,68,123 keep-state out via ed0

# services we offer to the world
add 600 allow log tcp from any to me 1024-65535,22,5067,5617,8472,10000
keep-state in

# pass ICMP
add 700 allow icmp from me to any out
add 750 allow icmp from any to me in

# pass everything on private LAN
add 800 allow all from 192.168.0.0/16 to any
add 850 allow all from any to 192.168.0.0/16

# log rejects that have fallen through
add 65000 deny log ip from any to any

And this is the message that a user gets when he tries to FXP something from
a ftp to mine:

227 Entering Passive Mode (IP_ADDRESS,4,190).
PORT IP_ADDRESS,4,190
200 Port command successful.
STOR TEST.mp3
150 Opening data connection for TEST.mp3.
RETR TEST.mp3
425 Cannot open data connection (10060).
ABOR

I hope some one here can help. FTP is not a great protocol for firewalls!

Gr.

Marcel.



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