nmap 사용할 때 주의할 점

# nmap -v 127.0.0.1

nmap -v -p 1-65535 127.0.0.1

nmap  -v -p- 127.0.0.1

# nmap -p 1-1024 192.168.142.129

Starting Nmap 6.47 ( http://nmap.org ) at 2015-07-14 00:54 EDT
Nmap scan report for 192.168.142.129
Host is up (0.00061s latency).
Not shown: 1012 closed ports
PORT    STATE SERVICE
21/tcp  open  ftp
22/tcp  open  ssh
23/tcp  open  telnet
25/tcp  open  smtp
53/tcp  open  domain
80/tcp  open  http
111/tcp open  rpcbind
139/tcp open  netbios-ssn
445/tcp open  microsoft-ds
512/tcp open  exec
513/tcp open  login
514/tcp open  shell
MAC Address: 00:XX:XX:XX:XX:XX (VMware)

Nmap done: 1 IP address (1 host up) scanned in 0.08 seconds