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Does anyone know what port 49176 means on a Mac? I cannot find any info on this particular port. I'm on Mountain Lion, and using nmap from Ubuntu machine to test the Mac's firewall.

This is what nmap says:

PORT      STATE SERVICE
80/tcp    open  http
49176/tcp open  unknown
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Please open Terminal, type lsof -i -P | grep 49176 and report back. –  jaume Nov 14 '12 at 9:50
    
@jaume no output for that command. –  Sandro Dzneladze Nov 14 '12 at 10:10
    
And what is the output of nmap? Can you add it to your question? –  jaume Nov 14 '12 at 10:15
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And what does netstat -an | grep 49176 say? (Run it also inside Terminal on your Mac.) –  jaume Nov 14 '12 at 10:35
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Next time this happens, run lsof -i -P | grep <port> on the Mac, you will see the application that binds to that port. If the Mac's firewall is active it must be one of the applications listed in System Preferences>Security & Privacy>Firewall with comment Allow incoming connections. –  jaume Nov 14 '12 at 14:53
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