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In Whose Fault is it When Your Internet Dies? Troubleshooting Networks with Linux we learned some basic network troubleshooting commands. Today we're going to explore the fine fun world of network discovery and find out who is on our network without ever leaving our comfortable chairs.
Who Is On My Network?
Nmap (network mapper) is one of the best network-probing tools to learn in-depth. Be sure to to read the fine manual and practice carefully, because Nmap has mighty snooping powers and can get you in trouble. This command finds all hosts on a LAN subnet:
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