On Wed, May 7, 2008 at 8:31 PM,  <eric dot lopez at ues dot edu dot sv> wrote:
> We have monowall installed with four interfaces one of them is the WAN interface
>  the other three manage 14 different tagged vlans. Users (about 300) browse the
>  web without a problem. connectivity between vlans works at a basic level
>  meaning that pinging any host works well but moving files between vlans is
>  impossible. I have tested in many different ways, and proved that moving an 8
>  bytes empty text file works flawlessly but anything bigger gets the network
>  hang. However I can move the same big file outside monowall into another public
>  IP without a problem.
>  This is not a rules problem, the logs do not show anything being blocked.

What kind of NIC's are you using/do they support VLAN tagging on m0n0wall?
http://m0n0.ch/wall/hardware.php

JR