Well, ok, I'll try. Its not all inbound from the WAN, its just for the webserver.
When I sometimes put out a large file on my webserver for some friend to download, my connection gets totally filled up and I can hardly even browse the web until he/she is done downloading.
Not good.
So, I did put a simple cap on uploads from my webserver network in m0n0wall.
The webserver has its own isolated physical network, kind of like a DMZ I guess.
I can NOT, however, set the rule so that traffic going from my webserver network out through WAN is affected, without touching traffic from webserver to my home VLAN, or webserver to the guest VLAN, or webserver to the WLAN.
WAN just ain't a destination choice when making the TS-rule
I can choose OPT1 to LAN, OPT1 to the VLAN's, OPT1 to WLAN, but NOT OPT1 to WAN.
So, as I have it now I cap traffic from my webserver network with destination != my home VLAN so at least me and my GF can grab files quickly. But for guests on the guest VLAN, or maybe even the WLAN if someone wants to borrow it, they'll be capped grabbing files locally from the webserver.
Maybe its possible setting the TS-rule on the WAN instead, and point it to destination webserver-network (OPT1)....doing it the other way around. Gonna check.