linux udp nmap 端口開放

[root@i-hnx0tx7t ~]# nmap -sU 127.0.0.1 -p68 -Pn Starting Nmap 6.40 ( http://nmap.org ) at 2018-03-04 19:46 CST Nmap scan report for localhost (127.0.0.1) Host is up. PORT STATE SERVICE 68/udp open|filtered dhcpc Nmap done: 1 IP address (1 host up) scanned in 2.07 seconds [root@i-hnx0tx7t ~]# nmap -sU 127.0.0.1 -p68 -Pn|grep open -c 1 [root@i-hnx0tx7t ~]# nmap -sU 127.0.0.1 -p68 -Pn|grep open 68/udp open|filtered dhcpc [root@i-hnx0tx7t ~]#

nmap監測udp端口開放情況