spam: help

hi there! we have a router with a WAN and two LAN ifaces. with given amount of traffic on both LAN interfaces we have twice on WAN.
i suppose it’s a spam.
we put standart f-wall, taken from wiki.
what should i do

hello,

support told me it is a configuration problem.

i don’t thing it is a problem on configuration, because router acts as a router 4 years on the same place, in this configuration. of course, firewall rules changed because we are 2 new trusted hosts included. and that’s all changes thru the years.

problem appeares 2 weeks before. we changed ip address of the router, no effect. firewall not tooken, as i told above.