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vcheckzen/port-scan.md

Created February 19, 2022 09:38
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Network Port Open State Detection
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port-scan.md

Network Port Open State Detection

netcat

# tcp
nc -vzt google.com 443

# udp
nc -vzu dns.google 53

nmap

# tcp
nmap -sS google.com -p 80,443
nmap -sS google.com -p 1000-9999

# udp
nmap -sU dns.google -p 53
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