nmap扫描服务器端口(远程桌面端口)

[root@node18 opt]# nmap

-bash: nmap: command not found
[root@node18 opt]# yum install -y nmap
...

[root@node18 opt]# nmap -sT -p3389 218.206.112.0/24

Starting Nmap 4.11 ( http://www.insecure.org/nmap/ ) at 2012-10-26 15:36 CST
Interesting ports on 218.206.112.1:
PORT     STATE  SERVICE
3389/tcp closed ms-term-serv

Interesting ports on 218.206.112.11:
PORT     STATE    SERVICE
3389/tcp filtered ms-term-serv
...
[root@node18 opt]# nmap -sT -p3389 218.206.112.0/24 | grep -B2 open

Interesting ports on 218.206.112.100:
PORT     STATE SERVICE
3389/tcp open  ms-term-serv
--
Interesting ports on 218.206.112.132:
PORT     STATE SERVICE
3389/tcp open  ms-term-serv
[root@node18 opt]#