No solution here, but thought I'd report the same exact problem with 2 
separate m0n0walls.  One running 1.23 and the other running 1.3b2.  One 
of mine is connected to a cable modem, the other is connected to a Cisco 
router that is connected to a 10MB fiber connection.

Chris


Hans Mojave wrote:
> Hi there,
>
> I´m running monowall 1.3b2 on a Wrap2E, using it as dsl-router... (internal 1gbit switched /
adsl2+ 16m/1m)
>
> When i upload many small files to an external ftp server (e.g. typo3 installation and templates
~1800files) it happens that the ftp connection is hanging. This happens round about every 200Files:
>
> -> File is uploading... Upload speed decreases to 0, ftp connection is hanging.
>
> i have to hard-terminate the tcp session. Reconnect and resume uploading the next ~200files with
fullspeed .
>
>
> Its not a dsl-modem, ftp-server,dsl-connection or software problem. Tested that with Dlink804hv
routers, 3 Pcs running different ftp software (windows tcp/syn connection limit was removed). 
>
> Downloading of many small files is no problem. Also uploading through ssl tunnels for example is
stable. Uploading big files is no problem at all.
>
> Is there an issue with the often changing data (udp) ports in monowall, which is charateristc for
ftp?
>
>
> Sorry for bad englisch and best regards
> Hans
>
>