C:\Windows\System32>whoami
nt-myndighet\system

C:\Windows\System32>netstat -a -o -n | findstr 9993 | findstr LISTENING
  TCP    0.0.0.0:9993           0.0.0.0:0              LISTENING       57760
  TCP    0.0.0.0:9993           0.0.0.0:0              LISTENING       57760
  TCP    [::]:9993              [::]:0                 LISTENING       57760

C:\Windows\System32>netstat -a -o -n | findstr 9993 | findstr UDP
  UDP    192.168.111.146:9993   *:*                                    57760
  UDP    192.168.111.155:9993   *:*                                    57760

C:\Windows\System32>tasklist | findstr 57760
zerotier-one_x64.exe         57760 Services                   0     13 520 K

C:\Windows\System32>powershell -command "Test-NetConnection -ComputerName 127.0.0.1 -Port 9993"
WARNING: TCP connect to (127.0.0.1 : 9993) failed

ComputerName           : 127.0.0.1
RemoteAddress          : 127.0.0.1
RemotePort             : 9993
InterfaceAlias         : Loopback Pseudo-Interface 1
SourceAddress          : 127.0.0.1
PingSucceeded          : True
PingReplyDetails (RTT) : 0 ms
TcpTestSucceeded       : False

C:\Windows\System32>powershell -command "Test-NetConnection -ComputerName '::1' -Port 9993"

ComputerName     : ::1
RemoteAddress    : ::1
RemotePort       : 9993
InterfaceAlias   : Loopback Pseudo-Interface 1
SourceAddress    : ::1
TcpTestSucceeded : True

C:\Windows\System32>powershell -command "test-netconnection -computername localhost -port 9993"

ComputerName     : localhost
RemoteAddress    : ::1
RemotePort       : 9993
InterfaceAlias   : Loopback Pseudo-Interface 1
SourceAddress    : ::1
TcpTestSucceeded : True