how to access ICMP packets ?

Hi ,

I am developing a n/w application in which I need to access Internet control message protocol from a specified host. Any ideas/suggestions to proceed for the same ?

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you need to catch and filter out  them before they approach system's TCP/IP stack and forge responses
this is very system dependent and requires root privileges(post uname -a for exact tips)
please also tell what is the problem you try to solve, meabe packet sniffing and root access are not necessary to solve the problems

most likely you will look at sources of ping and tcpdump as good beginning

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you need root access, then put the NIX in promiscous mode and simply read them
I guess asker lost interest in answers.
Both answers are as simple as the Q asked.
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