Ports
Duration
Date
IP
Nmap scan report for net.edu.cn (202.38.109.20) Host is up (0.19s latency). rDNS record for 202.38.109.20: um.nic.edu.cn Not shown: 999 filtered tcp ports (no-response) PORT STATE SERVICE 25/tcp closed smtp Nmap done: 1 IP address (1 host up) scanned in 16.01 seconds