Nmap scan report for 121.4.44.8
Host is up (0.14s latency).
Not shown: 96 filtered tcp ports (no-response)
PORT     STATE  SERVICE
22/tcp   closed ssh
80/tcp   closed http
443/tcp  closed https
3389/tcp open   ms-wbt-server

Nmap done: 1 IP address (1 host up) scanned in 3.79 seconds