Please,

can anyone suggest me a networking software to watch my LAN ip's addressess i.e.,how many sites access by a particular IP in my lan or in network of a organization.

There are network monitoring tools that can help you do that. Two that are available (free, open source) for both Windows and Linux are Wireshark and tcpdump. They can work together if needed. IE, you can capture a bunch of network packets with tcpdump and then view them in wireshark. Anyway, you might want to check them out on the web.

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