Eu corri nmap -PN 37.187.57.12
e os resultados foram
Host is up (0.25s latency).
Not shown: 995 filtered ports
PORT STATE SERVICE
21/tcp closed ftp
22/tcp open ssh
80/tcp closed http
3306/tcp closed mysql
8080/tcp closed http-proxy
Portanto, tente abrir as portas no seu roteador.