Port Scanning and Nmap 3.5
Posted on Sunday, March 28, 2004 @ 00:00:00 AST
Topic: Article
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 Inspired by the release of Nmap 3.5, the latest version of the award-winning network security tool, I've been exploring network security issues for a couple of weeks now..
Nmap's major skill is port scanning--learning which ports on a machine are 'open' and what applications are using them. Sound network security planning dictates that you take a look at your network machines to see what the bad guys can see from outside.
"Think of a port as being an extension of a machine's IP address. The IP address itself equates to a street address for an apartment complex. The port number equates to a specific apartment. When packets are sent across the Internet, they include the port number they are destined for as well as the machine address..."
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