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Port Scan

 
Greenhorn
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how to achive port scan using java sockets ?
 
Ranch Hand
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What kind of port scan? With normal Java sockets you can do a full TCP connect scan which is a noisey scan (the scanned system will know your IP address). Here's a quick and dirty example:

You can do something similar with a UDP scan, but the results are much less reliable, since there is no guarantee that a Port Unreachable ICMP packet will be returned.
Michael Morris
 
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