From mboxrd@z Thu Jan  1 00:00:00 1970
From: "ccddtt" <ccddtt@263.net>
Subject: Apache:access_log - 408
Date: Mon, 26 Jan 2004 17:6:14 +0800
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hi,all

please help me.
my linux server installed redhat 9 + apache 1.3.29. passing through some attack.
in apache acc_log,like :
221.233.227.230 - - [17/Jan/2004:17:26:32 +0800] "-" 408 -
221.233.227.230 - - [17/Jan/2004:17:26:32 +0800] "-" 408 -
221.233.227.230 - - [17/Jan/2004:17:26:32 +0800] "-" 408 -
61.145.188.110 - - [17/Jan/2004:17:26:32 +0800] "-" 408 -
210.38.179.145 - - [17/Jan/2004:17:26:32 +0800] "-" 408 -
221.233.227.230 - - [17/Jan/2004:17:26:32 +0800] "-" 408 -
but no err_log.

some packge like :
Jan 18 19:35:53 linux-sv1 kernel: IN=eth0 OUT= MAC=00:07:e9:6c:4c:49:00:02:b3:03:e3:67:08:00 SRC=220.173.8.56 DST=61.135.xx.xx LEN=40 TOS=0x00 PREC=0x00 TTL=114 ID=42497 DF PROTO=TCP SPT=60177 DPT=80 WINDOW=8280 RES=0x00 ACK URGP=0 
Jan 18 19:35:53 linux-sv1 kernel: IN=eth0 OUT= MAC=00:07:e9:6c:4c:49:00:02:b3:03:e3:67:08:00 SRC=220.173.8.56 DST=61.135.xx.xx LEN=40 TOS=0x00 PREC=0x00 TTL=114 ID=42753 DF PROTO=TCP SPT=60177 DPT=80 WINDOW=8280 RES=0x00 ACK URGP=0 
Jan 18 19:35:53 linux-sv1 kernel: IN=eth0 OUT= MAC=00:07:e9:6c:4c:49:00:02:b3:03:e3:67:08:00 SRC=61.173.25.88 DST=61.135.xx.xx LEN=40 TOS=0x00 PREC=0x00 TTL=115 ID=53402 DF PROTO=TCP SPT=63601 DPT=80 WINDOW=16560 RES=0x00 ACK URGP=0 
Jan 18 19:35:53 linux-sv1 kernel: IN=eth0 OUT= MAC=00:07:e9:6c:4c:49:00:02:b3:03:e3:67:08:00 SRC=220.173.8.56 DST=61.135.xx.xx LEN=40 TOS=0x00 PREC=0x00 TTL=114 ID=43265 DF PROTO=TCP SPT=60182 DPT=80 WINDOW=8280 RES=0x00 ACK URGP=0 

how to set this iptables rules?

what's this attack?
thanks your any help!