nmap的使用

author:headsen chen

date: 2019-01-18  10:40:37

notice:个人原创,允许转载,请注明出处,否则依法追究责任。

 

1,安装

yum install nmap -y
nmap有windows和linux
Nmap是一款网络扫描和主机检测的非常有用的工具。Nmap是不局限于仅仅收集信息和枚举,同时可以用来作为一个漏洞探测器或安全扫描器。它可以适用于winodws,linux,mac等操作系统
从下面官网可以下载exe程序包和zip包
https://nmap.org/download.html#windows 

2,常用参数解释

nmap  10.0.1.161    # 默认扫描 1-1024 的端口范围
nmap 10.0.1.161 -p1-65535 # 扫描所有的端口
 nmap  10.0.1.161   -p20-200,7777,8888  # 扫描多个端口
Starting Nmap 5.51 ( http://nmap.org ) at 2016-12-29 10:11 CST
Nmap scan report for 10.0.1.161
Host is up (0.00017s latency).
Not shown: 65531 closed ports
PORT      STATE SERVICE
22/tcp    open  ssh
111/tcp   open  rpcbind
873/tcp   open  rsync
13306/tcp open  unknown
MAC Address: 00:0C:29:56:DE:46 (VMware)
 
Nmap done: 1 IP address (1 host up) scanned in 2.49 seconds

3,扫描udp端口

  -sU:表示udp scan , udp端口扫描
  -Pn:不对目标进行ping探测(不判断主机是否在线)(直接扫描端口)
  对于udp端口扫描比较慢,扫描完6万多个端口需要20分钟左右
# nmap  -sU  10.0.1.161  -Pn
 
Starting Nmap 5.51 ( http://nmap.org ) at 2016-12-29 10:16 CST
Stats: 0:12:54 elapsed; 0 hosts completed (1 up), 1 undergoing UDP Scan
UDP Scan Timing: About 75.19% done; ETC: 10:33 (0:04:16 remaining)
Stats: 0:12:55 elapsed; 0 hosts completed (1 up), 1 undergoing UDP Scan
UDP Scan Timing: About 75.29% done; ETC: 10:33 (0:04:15 remaining)
Nmap scan report for 10.0.1.161
Host is up (0.0011s latency).
Not shown: 997 closed ports
PORT    STATE         SERVICE
111/udp open          rpcbind
123/udp open          ntp
631/udp open|filtered ipp
MAC Address: 00:0C:29:56:DE:46 (VMware)
 
Nmap done: 1 IP address (1 host up) scanned in 1081.27 seconds

4,扫描多个IP用法,中间用空格分开

# nmap 10.0.1.161  10.0.1.162

5,扫描连续的IP地址

# nmap 10.0.1.161-162

6,扫描一个子网所有的IP

# nmap  10.0.3.0/24

7,扫描地址段是排除某个IP地址

# nmap 10.0.1.161-162  --exclude 10.0.1.162

8,扫描文件里的IP

如果你有一个ip地址列表,将这个保存为一个txt文件,和namp在同一目录下,扫描这个txt内的所有主机,用法如下
# nmap -iL ip.txt
   

附录:nc命令启用端口

A机器上再启动两个tcp的监听,分别占用7777和8888端口,用于测试,加入&符号可以放入后台
[root@A ~]# nc -l 7777&
[1] 21379
[root@A ~]# nc -l 8888&
[2] 21540

 

posted @ 2019-01-18 11:22  开始认识  阅读(740)  评论(0编辑  收藏  举报