[ILUG] Problems with Three Mobile-Broadband Router

[Kenn Humborg]

> Possibly true. However a well configured firewall is a good plan. My 
> traffic *AS MEASURED BY ISP* has dropped by 20% since changing to a 
> better firewall configuration, i.e. not just my desired traffic. In the 
> previous case the LAN was not seeing the Traffic, only the Router & ISP 
> was seeing it.

I'd say that this was because your old setup was sending a RST to
all those incoming SYNs and other packets, while your new setup just 
drops them on the floor and doesn't respond.

Incoming SYN -> 40 bytes GPRS cost.
Outgoing RST -> 40 bytes GPRS cost.

Later,
Kenn