Detecting computers on network

[Sandeep Arya]

Hello dear

I had sent my earlier queries regarding same topic. However just to be more 
specific this time..

I just wann try to detect that if there are some ip address in a list of 
some ip address alive or not.

How can i do this?

Shall i try to connect them and check that my connection is working or not? 
If working than means alive .... (connection based)

SHalle i send some buffer value (whatever) to socket using sendto(...) and 
then checking for return value? (Connectionless)

Well for me it doesnot matter that i should have connection or 
connectionless.. I just wannn  know who are alive in my LAN?

This application will be for my computers in lan. not for maganetwork.

LAN will have just some bridges and computers.

i need to detect tham all..

however i doesnot matter that all of them replies or not. I just wann know 
that atleast some of them reply. Rest i will take care of...


Sandeep

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