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Subject[Bug 933] New: FTP NAT doesn't work in 2.6.0-test1
http://bugme.osdl.org/show_bug.cgi?id=933

Summary: FTP NAT doesn't work in 2.6.0-test1
Kernel Version: 2.6.0-test1
Status: NEW
Severity: normal
Owner: laforge@gnumonks.org
Submitter: pavelr@coresma.com


Distribution: Red Hat 9
Hardware Environment:
Software Environment: gcc-3.3
Problem Description:

Both IP masquerading and SNAT do not work with FTP. When I issue dir command,
ftp connection gets stuck. In ethernet sniffer I see a lot of TCP ack packets
going in both directions. Both FTP client and server are Win2k boxes.

Steps to reproduce:

Setup a NAT box
modprobe ip_nat_ftp
modprobe ip_conntrack_ftp
iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE (assuming eth0 is an
external interface)

Try ftp connection.

This setup works fine with RedHat kernel 2.4.20-18.9.

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