如何检查多个远程Linux系统是否打开了指定端口？

使用以下脚本来达成此目的。

# vi multiple_port_scan.sh
 
#!/bin/sh
for server in `more server-list.txt`
do
  for port in `more port-list.txt`
  do
    #echo $server
    nc -zvw3 $server $port
    echo ""
  done
done

设置 multiple_port_scan.sh 文件的可执行权限。

$ chmod +x multiple_port_scan.sh

最后运行脚本来实现这一目的。

# sh multiple_port_scan.sh
Connection to 192.168.1.2 22 port [tcp/ssh] succeeded!
Connection to 192.168.1.2 80 port [tcp/http] succeeded!
 
Connection to 192.168.1.3 22 port [tcp/ssh] succeeded!
Connection to 192.168.1.3 80 port [tcp/http] succeeded!
 
Connection to 192.168.1.4 22 port [tcp/ssh] succeeded!
Connection to 192.168.1.4 80 port [tcp/http] succeeded!
 
Connection to 192.168.1.5 22 port [tcp/ssh] succeeded!
Connection to 192.168.1.5 80 port [tcp/http] succeeded!
 
Connection to 192.168.1.6 22 port [tcp/ssh] succeeded!
Connection to 192.168.1.6 80 port [tcp/http] succeeded!
 
Connection to 192.168.1.7 22 port [tcp/ssh] succeeded!
Connection to 192.168.1.7 80 port [tcp/http] succeeded!

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