Performing a basic port scan (nmap -F thats-why.de)
Nmap scan report for thats-why.de (46.4.13.97)
Host is up (0.15s latency).
rDNS record for 46.4.13.97: static.97.13.4.46.clients.your-server.de
Not shown: 96 closed ports
PORT STATE SERVICE
22/tcp open ssh
80/tcp open http
443/tcp open https
5666/tcp open nrpe
Nmap done: 1 IP address (1 host up) scanned in 2.25 seconds