Hi,
I have a lot of logs on my astaro box like:
kernel: TCP Drop: IN=eth1 OUT= MAC=00:08:ab:ac:c9[:D]b:00:04:4d:7a[:D]4:f0:08:00 SRC=217.12.2.9 DST=xxx.xxx.xxx.xxx LEN=44 TOS=0x00 PREC=0x00 TTL=56 ID=61091 DF PROTO=TCP SPT=80 DPT=49172 WINDOW=17520 RES=0x00 ACK SYN URGP=0
kernel: TCP Drop: IN=eth1 OUT= MAC=00:08:ab:ac:c9[:D]b:00:04:4d:7a[:D]4:f0:08:00 SRC=194.79.135.176 DST=xxx.xxx.xxx.xxx LEN=48 TOS=0x00 PREC=0x00 TTL=59 ID=62497 DF PROTO=TCP SPT=80 DPT=49171 WINDOW=32120 RES=0x00 ACK SYN URGP=0
kernel: TCP Drop: IN=eth1 OUT= MAC=00:08:ab:ac:c9[:D]b:00:04:4d:7a[:D]4:f0:08:00 SRC=194.79.135.179 DST=xxx.xxx.xxx.xxx LEN=48 TOS=0x00 PREC=0x00 TTL=59 ID=30203 DF PROTO=TCP SPT=80 DPT=49169 WINDOW=32120 RES=0x00 ACK SYN URGP=0
kernel: TCP Drop: IN=eth1 OUT= MAC=00:08:ab:ac:c9[:D]b:00:04:4d:7a[:D]4:f0:08:00 SRC=194.79.135.171 DST=xxx.xxx.xxx.xxx LEN=48 TOS=0x00 PREC=0x00 TTL=59 ID=65440 DF PROTO=TCP SPT=80 DPT=49168 WINDOW=32120 RES=0x00 ACK SYN URGP=0
kernel: TCP Drop: IN=eth1 OUT= MAC=00:08:ab:ac:c9[:D]b:00:04:4d:7a[:D]4:f0:08:00 SRC=194.79.135.176 DST=xxx.xxx.xxx.xxx LEN=48 TOS=0x00 PREC=0x00 TTL=59 ID=62252 DF PROTO=TCP SPT=80 DPT=49169 WINDOW=32120 RES=0x00 ACK SYN URGP=0
kernel: TCP Drop: IN=eth1 OUT= MAC=00:08:ab:ac:c9[:D]b:00:04:4d:7a[:D]4:f0:08:00 SRC=194.79.135.176 DST=xxx.xxx.xxx.xxx LEN=48 TOS=0x00 PREC=0x00 TTL=59 ID=62249 DF PROTO=TCP SPT=80 DPT=49168 WINDOW=32120 RES=0x00 ACK SYN URGP=0
kernel: TCP Drop: IN=eth1 OUT= MAC=00:08:ab:ac:c9[:D]b:00:04:4d:7a[:D]4:f0:08:00 SRC=217.12.3.11 DST=xxx.xxx.xxx.xxx LEN=48 TOS=0x00 PREC=0x00 TTL=56 ID=65207 DF PROTO=TCP SPT=80 DPT=49166 WINDOW=65535 RES=0x00 ACK SYN URGP=0
kernel: TCP Drop: IN=eth1 OUT= MAC=00:08:ab:ac:c9[:D]b:00:04:4d:7a[:D]4:f0:08:00 SRC=217.12.3.11 DST=xxx.xxx.xxx.xxx LEN=44 TOS=0x00 PREC=0x00 TTL=56 ID=29738 DF PROTO=TCP SPT=80 DPT=49165 WINDOW=17520 RES=0x00 ACK SYN URGP=0
the source @ is always different, the destination is my firewall ip (xxx.xxx.xxx.xxx) .
The first thing is about MAC=00:08:ab:ac:c9[:D]b:00:04:4d:7a[:D]4:f0:08:00
the mac @ of my firewall is :00:08:ab:ac:c9[:D]b
so what is the "00:04:4d:7a[:D]4:f0:08:00" ????
The second is, what are these packets ?????
does someone scan my firewall ??
why the souce @ is never the same, DST = DST +1 each new time, and SPT=80 ????
could someone help me ??
thanks.
[ 13 March 2002: Message edited by: jeronimo ]
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