icmp message in the log file

[ann kok]

Hi all

I got big bandwidth traffic from outside
and there are messages the following 

and I don't know what is the meaning!

eg: ICMP:52.29 0.108.84.77

in /var/log/messages

Thank you


 ICMP:52.29 0.108.84.77 202.64.230.x in via rl0
 ICMP:20.159 0.18.189.204 202.64.230.x in via rl0
 

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