root@kali:~# nmap  -p0-65535 51.77.51.21 -T3
Starting Nmap 7.80 ( https://nmap.org ) at 2019-11-17 15:36 CET
Nmap scan report for ip21.ip-51-77-51.eu (51.77.51.21)
Host is up (0.022s latency).
Not shown: 65524 closed ports
PORT     STATE    SERVICE
22/tcp   open     ssh
69/tcp   filtered tftp
80/tcp   open     http
135/tcp  filtered msrpc
136/tcp  filtered profile
137/tcp  filtered netbios-ns
138/tcp  filtered netbios-dgm
139/tcp  filtered netbios-ssn
161/tcp  filtered snmp
162/tcp  filtered snmptrap
445/tcp  filtered microsoft-ds
1900/tcp filtered upnp