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I am new to the world of Linux and setup Fedora Core 9 on a machine I have and everything is going well. I ran an NMAP on my IP from another machine and see a port open that I cant find anything on.
It's listed as 36991/tcp open unknown, I went into etc/services and that doesnt even list the Port nor any services associated with it. Anyone know what this is for, how to disable it and whether I should be concerned?
I can telnet to my IP from another machine on that port but I get a blank box cant type or get it to do anything so something's listening on it.
the port number is assigned by portmap, i.e. it's not a special number, just an arbitrary ephemeral port that is picked and remembered for its lifetime. it's for the rpc.statd service which is used for status notifications for NFS. I believe that every NFS connection will require a new instance of the statd service. http://linux.about.com/library/cmd/b..._rpc.statd.htm