Were you at/in the C:\Windows\System32> prompt?
In that window, as an administrator, and after the > type "nmap www.cubeworld.com -p 12345" without the quotes
Here are the results I received:
Starting Nmap 6.47 (
http://nmap.org ) at 2015-07-13 15:03 Eastern Daylight Time
Debugging Increased to 1.
Stats: 0:00:02 elapsed; 0 hosts completed (0 up), 1 undergoing Ping Scan
Parallel DNS resolution of 1 host. Timing: About 0.00% done
mass_rdns: 16.68s 0/1 [#: 4, OK: 0, NX: 0, DR: 0, SF: 0, TR: 6]
DNS resolution of 1 IPs took 16.68s. Mode: Async [#: 4, OK: 0, NX: 0, DR: 1, SF: 0, TR: 6, CN: 0]
Packet capture filter (device eth0): dst host 192.168.1.102 and (icmp or icmp6 or ((tcp or udp or sctp) and (src host 208.73.210.217)))
Overall sending rates: 3.89 packets / s, 171.21 bytes / s.
Nmap scan report for www.cubeworld.com (208.73.210.217)
Host is up (0.047s latency).
Other addresses for www.cubeworld.com (not scanned): 208.73.210.200 208.73.211.178 208.73.210.214
Scanned at 2015-07-13 15:03:39 Eastern Daylight Time for 17s
PORT STATE SERVICE
12345/tcp filtered netbus
Final times for host: srtt: 47000 rttvar: 47000 to: 235000
Read from C:\Program Files (x86)\Nmap: nmap-payloads nmap-services.
Nmap done: 1 IP address (1 host up) scanned in 17.42 seconds