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Get info about remote host ports and OS detection

Terminal - Get info about remote host ports and OS detection
nmap -sS -P0 -sV -O <target>
2009-02-18 07:32:03
User: starchox
18
Get info about remote host ports and OS detection

Where < target > may be a single IP, a hostname or a subnet

-sS TCP SYN scanning (also known as half-open, or stealth scanning)

-P0 option allows you to switch off ICMP pings.

-sV option enables version detection

-O flag attempt to identify the remote operating system

Other option:

-A option enables both OS fingerprinting and version detection

-v use -v twice for more verbosity.

nmap -sS -P0 -A -v < target >

Alternatives

There are 3 alternatives - vote for the best!

Terminal - Alternatives

Know a better way?

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What others think

Just a note... the options -sS and -O require root privileges to be executed successfully.

Comment by Blackhouse 340 weeks and 4 days ago

Checking your own machine(s) is a good idea.

Be aware that scanning other folks systems without written approval from the owner of the target is illegal in some countries.

Port scanning activity is logged and many systems are configured to detect and alert for scan activity.

Comment by mpb 335 weeks ago

there is a conflict in this command.

-sS is stealthy scan BUT -sV (version scan) executes tcp connection scan, meaning 3 way handshake.

Therefor use 1 of them, depending on the needs.

Comment by queen 256 weeks and 5 days ago

Besides, there is no need to put -sS because that's the default in nmap.

Comment by queen 256 weeks and 5 days ago

Your point of view

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