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netstat shows a listening port with no pid but lsof does not

when i execute netstat -lntp in my server debian squeeze, i see one strange process... named - without pid, and in listeing to port 48296, what this is?

Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name
tcp        0      0 0.0.0.0:48296           0.0.0.0:*               LISTEN      -               
tcp        0      0 127.0.0.1:3306          0.0.0.0:*               LISTEN      9350/mysqld     
tcp        0      0 0.0.0.0:80              0.0.0.0:*               LISTEN      13377/apache2   
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      2315/sshd

how i can investigate better?

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serverfault.com/questions/311009/… –  Stone Aug 27 '12 at 18:11
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marked as duplicate by mdpc, Magellan, SvW, MadHatter, HopelessN00b Nov 8 '12 at 16:16

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1 Answer

First, make sure that you're running netstat as root. Second, try using lsof -i :48296 too see what does it say.

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