From mboxrd@z Thu Jan  1 00:00:00 1970
From: Paulo Andre <pandre@darkstar.nom.za>
Subject: Ping flood
Date: Tue, 01 Nov 2005 16:30:21 +0200
Message-ID: <43677BFD.3080805@darkstar.nom.za>
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I have the following log:
Nov  1 09:10:40 guardian ---SA_IN--- IN=eth1 OUT= 
MAC=ff:ff:ff:ff:ff:ff:00:e0:1e:83:d5:19:08:00  SRC=64.34.170.237 
DST=255.255.255.255 LEN=1072 TOS=00 PREC=0x40 TTL=243 ID=12209 DF 
PROTO=ICMP TYPE=8 CODE=0 ID=0 SEQ=0

I am receiving thousands of these a day, icmp traffic is blocked with 
iptables. But still this traffic is coming up the line. Is my only 
solution to contact the ISP or is there something I can do in 
iptables/linux?

Paulo