Guía rápida nmap

nmap [–s] [–p ] [–]

TCP connect scan: nmap –sT

TCP SYN scan: nmap –sS

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TCP ACK scan: nmap –sA y nmap –sW

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TCP FIN scan: nmap –sF

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TCP Null scan: nmap –sN

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TCP Xmas scan: nmap –sX

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UDP scan: nmap –sU

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RPC scan: nmap –sR

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TCP reverse ident scan: nmap –I

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ICMP echo scan: nmap –sP

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IP protocol scan: nmap –sO

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Operative System scan: nmap –O

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Slow scan: nmap --scan_delay

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Fragmentation scan: nmap –f

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FTP bounce scan: nmap –b <[usuario:contraseña@]direcciónFTP[:puerto]>

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Spoofed scan: nmap -S

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Decoy scan: nmap -D

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Dumb host scan: nmap –sI

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Random scan: nmap --randomize_hosts (por defecto, los puertos destino ya están en orden aleatorio)

Extraído de http://unlugarsinfin.blogspot.es