Nmap Network Scanning

This is the official guide to the nmap tool ("network mapper") written by "Fyodor" or Gordon Lyon. Some chapters are online at www.nmap.org but this volume has the full documentation (other than what's been posted as announcements at that website or at insecure.org). An entire portscanning tutorial chapter is included, even though the usual use of the tool is simply to invoke at the command line prompt: # nmap (Internet Protocol address of target) like so: # nmap 127.0.0.1 ... which will scan your own machine. But there are many specific commands (or sub-commands added after the invocation,…