检测UDP端口是否开放的命令 |
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[root@localhost ~]# lsof -i:17660 [root@localhost ~]# nc -vuz 127.0.0.1 17660 [root@localhost ~]# 工作中一般检测tcp端口用telnet就可以,但是检测udp端口是可以使用上述两个命令: 查看服务器上开放哪些UDp端口命令:“”“netstat -anlp|grep udp” netstat -anlp|grep udp netstat -anlp|grep udp [root@localhost ~]# lsof -i:17660 [root@localhost ~]# nc -vuz 127.0.0.1 17660补充: nc可以测试tcp,udp端口 1.nc -vuz 127.0.0.1 17660 测试的是udp端口 2.nc -vz 127.0.0.1 17660 测试的是tcp端口 windows上测试的办法:或者下载ncwindows的版本; nmap: 测试udp端口的办法: nmap -sU 192.168.100.10 -p 7660 测试联通的有state【open】 D:\nmap-7.92-win32\nmap-7.92>nmap -sU 192.168.100.10 -p 7660 Starting Nmap 7.92 ( https://nmap.org ) at 2021-11-05 16:52 ?D1ú±ê×?ê±?? Nmap scan report for 192.168.100.10 Host is up (0.033s latency). PORT STATE SERVICE 7660/udp open|filtered unknown Nmap done: 1 IP address (1 host up) scanned in 1.62 seconds测试不成功的:STATE[closed] D:\nmap-7.92-win32\nmap-7.92>nmap -sU 192.168.100.10 -p 7661 Starting Nmap 7.92 ( https://nmap.org ) at 2021-11-05 16:54 ?D1ú±ê×?ê±?? Nmap scan report for 192.168.100.10 Host is up (0.038s latency). PORT STATE SERVICE 7661/udp closed unknown Nmap done: 1 IP address (1 host up) scanned in 1.33 seconds |
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