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Full Discussion: netstat -p, missing PID/program name
Top Forums UNIX for Advanced & Expert Users netstat -p, missing PID/program name Post 302310019 by Bilge on Thursday 23rd of April 2009 12:45:03 PM
Old 04-23-2009
netstat -p, missing PID/program name
I have a netstat command set up with awk to show which ports my box is listening on. The -p switch shows the PID/program name, too, which ordinarily would be very handy. However, several entries show up as just "-" for the program name which makes it hard to identify what is keeping the port open. It is possible to find this out by issuing a separate lsof command, but what I want to know is why the program name is omitted in the first place in the netstat output and how this can be avoided. I'm guessing there may be different ways to instantiate processes that could help with avoiding this problem.

I really want to be able to see what programs are using my ports at a single glance.
 

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LEARN ABOUT DEBIAN

aa-unconfined

AA-UNCONFINED(8)						     AppArmor							  AA-UNCONFINED(8)

NAME

       aa-unconfined - output a list of processes with tcp or udp ports that do not have AppArmor profiles loaded

SYNOPSIS

       aa-unconfined

DESCRIPTION

       aa-unconfined will use netstat(8) to determine which processes have open network sockets and do not have AppArmor profiles loaded into the
       kernel.

BUGS

       aa-unconfined must be run as root to retrieve the process executable link from the /proc filesystem. This program is susceptible to race
       conditions of several flavours: an unlinked executable will be mishandled; an executable started before a AppArmor profile is loaded will
       not appear in the output, despite running without confinement; a process that dies between the netstat(8) and further checks will be
       mishandled. This program only lists processes using TCP and UDP. In short, this program is unsuitable for forensics use and is provided
       only as an aid to profiling all network-accessible processes in the lab.

       If you find any bugs, please report them at <http://https://bugs.launchpad.net/apparmor/+filebug>.

SEE ALSO

       netstat(8), apparmor(7), apparmor.d(5), aa_change_hat(2), and <http://wiki.apparmor.net>.

AppArmor 2.7.103						    2012-06-28							  AA-UNCONFINED(8)
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