Shorewall users - Nov 2003 - FTP transfers locking up Shorewall?

Hi,

I have an interesting problem I was not able to solve, even after
looking through the site''s documentation and searching on this mailing
list...so here it is:

I have an FTP server behind my Shorewall box, in my LAN (I know, bad
security practice), and ports are mapped through DNAT rules. I also use
the WonderShaper script for better handling of traffic.

Everything works beautifully, except that whenever I transfer big
files, at high, sustained data rates (~40-50KB/s), Shorewall seems to
disable all rules between my LAN and the Internet. Result: no
communication, in or out, is made between the two zones. The Shorewall
box itself, though, retains it''s net access.

I then have to restart Shorewall to restore access communication
between my LAN and the net.

Does anyone know what could be causing this?

Thanks in advance for your help!

Dominique

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