linux管理:端口存活检测

nc

nc  -z  192.192.193.211 22     # tcp
nc  -uz 192.192.193.211 22     # udp
nc  -uz 192.192.193.211 22-30  # 多端口
-z   #不发送输出 仅仅scan
-u   #udp , 默认tcp
-v   #详细输出

psping # 微软官方提供， 看起来对udp支持的不好 # win下

psping -t  www.baidu.com:80  # tcp
psping -? [i|t|l|b]
 -? i   Usage for ICMP ping.
 -? t   Usage for TCP ping.
 -? l   Usage for latency test.
 -? b   Usage for bandwidth test.
-nobanner   Do not display the startup banner and copyright message.