[ILUG] Problems with Three Mobile-Broadband Router
kenn at bluetree.ie
Tue Jul 21 15:47:58 IST 2009
> 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.
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