It's been about 15 years since I used NMAP, I forgot how useful the tool is.
To find out what services are running on an IP address simply use something like
nmap -n -v -p1-10000 x.x.x.x
-n tells nmap not to do name resolution (saves about 13 seconds if the IP you're scanning isn't in DNS_
-v verbose
-p1-10000 says scan ports 1 to 10,000 (otherwise nmap will only scan the first 1000 ports)
To find out what services are running on an IP address simply use something like
nmap -n -v -p1-10000 x.x.x.x
-n tells nmap not to do name resolution (saves about 13 seconds if the IP you're scanning isn't in DNS_
-v verbose
-p1-10000 says scan ports 1 to 10,000 (otherwise nmap will only scan the first 1000 ports)
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