nmap命令的详解

使用-sP参数对对应主机段的主机发送ICMP报文，可以查询到哪些主机是存活的。

[root@localhost ~]# nmap -sP 192.168.8.0/24

Starting Nmap 6.40 ( http://nmap.org ) at 2018-07-10 14:32 CST
Nmap scan report for 192.168.8.0
Host is up (0.0044s latency).
Nmap scan report for 192.168.8.1
Host is up (0.0030s latency).
Nmap scan report for 192.168.8.2
Host is up (0.0022s latency).
Nmap scan report for 192.168.8.3
Host is up (0.0040s latency).
Nmap scan report for 192.168.8.4
Host is up (0.014s latency).
Nmap scan report for 192.168.8.5
Host is up (0.014s latency).
Nmap scan report for 192.168.8.6
Host is up (0.0045s latency).
Nmap scan report for 192.168.8.7
Host is up (0.015s latency).
Nmap scan report for 192.168.8.8
Host is up (0.014s latency).
Nmap scan report for 192.168.8.9
Host is up (0.014s latency).
Nmap scan report for 192.168.8.10
Host is up (0.014s latency).
Nmap scan report for 192.168.8.11
Host is up (0.064s latency).
Nmap scan report for 192.168.8.12
Host is up (0.0069s latency).
Nmap scan report for 192.168.8.13
Host is up (0.014s latency).
Nmap scan report for 192.168.8.14
Host is up (0.014s latency).
Nmap scan report for 192.168.8.15
Host is up (0.064s latency).
Nmap scan report for 192.168.8.16
Host is up (0.0042s latency).
Nmap scan report for 192.168.8.17
Host is up (0.017s latency).
Nmap scan report for 192.168.8.18
Host is up (0.017s latency).
Nmap scan report for 192.168.8.19
Host is up (0.0043s latency).
Nmap scan report for 192.168.8.20
Host is up (0.064s latency).
Nmap scan report for 192.168.8.21
Host is up (0.017s latency).
Nmap scan report for 192.168.8.22
Host is up (0.017s latency).
Nmap scan report for 192.168.8.23
Host is up (0.090s latency).
Nmap scan report for 192.168.8.24
Host is up (0.090s latency).
Nmap scan report for 192.168.8.25
Host is up (0.0021s latency).
Nmap scan report for 192.168.8.26
Host is up (0.063s latency).
Nmap scan report for 192.168.8.27
Host is up (0.063s latency).
Nmap scan report for 192.168.8.28
Host is up (0.015s latency).
Nmap scan report for 192.168.8.29
Host is up (0.015s latency).
Nmap scan report for 192.168.8.30
Host is up (0.015s latency).
Nmap scan report for 192.168.8.31
Host is up (0.015s latency).
Nmap scan report for 192.168.8.32
Host is up (0.015s latency).
Nmap scan report for 192.168.8.33
Host is up (0.015s latency).
Nmap scan report for 192.168.8.34
Host is up (0.015s latency).
Nmap scan report for 192.168.8.35
Host is up (0.015s latency).
Nmap scan report for 192.168.8.36
Host is up (0.063s latency).
Nmap scan report for 192.168.8.37
Host is up (0.089s latency).
Nmap scan report for 192.168.8.38
Host is up (0.019s latency).
Nmap scan report for 192.168.8.39
Host is up (0.019s latency).
Nmap scan report for 192.168.8.40
Host is up (0.019s latency).
Nmap scan report for 192.168.8.41
Host is up (0.019s latency).
Nmap scan report for 192.168.8.42
Host is up (0.086s latency).
Nmap scan report for 192.168.8.43
Host is up (0.0098s latency).
Nmap scan report for 192.168.8.44
Host is up (0.0022s latency).
Nmap scan report for 192.168.8.45
Host is up (0.0041s latency).
Nmap scan report for 192.168.8.46
Host is up (0.0096s latency).
Nmap scan report for 192.168.8.47
Host is up (0.013s latency).
Nmap scan report for 192.168.8.48
Host is up (0.013s latency).
Nmap scan report for 192.168.8.49
Host is up (0.013s latency).
Nmap scan report for 192.168.8.50
Host is up (0.013s latency).
Nmap scan report for 192.168.8.51
Host is up (0.013s latency).
Nmap scan report for 192.168.8.52
Host is up (0.0036s latency).
Nmap scan report for 192.168.8.53
Host is up (0.013s latency).
Nmap scan