I’ve just bought my first Mac I want to connect it directly to the Internet in a colocation facility.
nmap against it shows:
Starting Nmap 6.40 ( http://nmap.org ) at 2015-02-18 21:54 GMT Nmap scan report for foo.bar (22.214.171.124) Host is up (0.00036s latency). rDNS record for 126.96.36.199: 188.8.131.52.in-addr.arpa Not shown: 997 closed ports PORT STATE SERVICE 22/tcp open ssh 88/tcp open kerberos-sec 5900/tcp open vnc MAC Address: 01:23:45:67:89:AB (Apple)
I’ve deliberately started the SSH and VNC services.
What has started kerberos?
Is it okay for that port to be open to the Internet?
If not, how can I close it? When I tried setting up the firewall, the only applications were Remote Management (VNC) and Remote Login (SSH).