Closed ports????

I just nmapped my astaro box from the outside. There are no rules to allow any inbound access yet here's the nmap results:

6000/tcp   closed      X11                     
6001/tcp   closed      X11:1                   
6002/tcp   closed      X11:2                   
6003/tcp   closed      X11:3                   
6004/tcp   closed      X11:4                   
6005/tcp   closed      X11:5                   
6006/tcp   closed      X11:6                   
6007/tcp   closed      X11:7                   
6008/tcp   closed      X11:8                   
6009/tcp   closed      X11:9                   
6050/tcp   closed      arcserve

Shouldn't these probes be blocked? Why is the astaro box returning a closed status for these ports? If this is global, it might be an easy way to ID an astaro box on the net.
Running Astaro 4.0 btw.
Or could my box be compromised? Yikes!     

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