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Operating Systems Linux Red Hat No process ID for listening ports Post 302360295 by Padow on Thursday 8th of October 2009 02:07:08 PM
Old 10-08-2009
No process ID for listening ports

How can I have ports that are listening without processes being associated with them?

Code:
root@ldv002 # netstat -ltnup
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address               Foreign Address             State       PID/Program name
tcp        0      0 0.0.0.0:5600                0.0.0.0:*                   LISTEN      1949/esmd
tcp        0      0 0.0.0.0:6305                0.0.0.0:*                   LISTEN      3651/xinetd
tcp        0      0 127.0.0.1:199               0.0.0.0:*                   LISTEN      5408/snmpd
tcp        0      0 0.0.0.0:34540               0.0.0.0:*                   LISTEN      -
tcp        0      0 0.0.0.0:1006                0.0.0.0:*                   LISTEN      5488/rpc.statd
tcp        0      0 0.0.0.0:111                 0.0.0.0:*                   LISTEN      3087/portmap
tcp        0      0 0.0.0.0:21                  0.0.0.0:*                   LISTEN      3669/vsftpd
tcp        0      0 127.0.0.1:25                0.0.0.0:*                   LISTEN      3694/sendmail: acce
tcp        0      0 :::22                       :::*                        LISTEN      3634/sshd
udp        0      0 0.0.0.0:514                 0.0.0.0:*                               3044/syslogd
udp        0      0 0.0.0.0:161                 0.0.0.0:*                               5408/snmpd
udp        0      0 0.0.0.0:49471               0.0.0.0:*                               5408/snmpd
udp        0      0 0.0.0.0:68                  0.0.0.0:*                               2892/dhclient
udp        0      0 0.0.0.0:59742               0.0.0.0:*                               -
udp        0      0 0.0.0.0:1000                0.0.0.0:*                               5488/rpc.statd
udp        0      0 0.0.0.0:1003                0.0.0.0:*                               5488/rpc.statd
udp        0      0 0.0.0.0:111                 0.0.0.0:*                               3087/portmap

I have also tried:
Code:
root@ldv002 # lsof -i tcp:5600
COMMAND  PID USER   FD   TYPE DEVICE SIZE NODE NAME
esmd    1949 root    4u  IPv4 338848       TCP *:esmmanager (LISTEN)
[/root]
root@ldv002 # lsof -i tcp:34540
[/root]
root@ldv002 # lsof -i tcp:59742
[/root]

Padow
 

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PAPS(1) 						      General Commands Manual							   PAPS(1)

NAME
paps - UTF-8 to PostScript converter using Pango SYNOPSIS
paps [options] files... DESCRIPTION
paps reads a UTF-8 encoded file and generates a PostScript language rendering of the file. The rendering is done by creating outline curves through the pango ft2 backend. OPTIONS
These programs follow the usual GNU command line syntax, with long options starting with two dashes (`-'). A summary of options is included below. --landscape Landscape output. Default is portrait. --columns=cl Number of columns output. Default is 1. Please notice this option isn't related to the terminal length as in a "80 culums terminal". --font=desc Set the font description. Default is Monospace 12. --rtl Do right to left (RTL) layout. --paper ps Choose paper size. Known paper sizes are legal, letter and A4. Default is A4. Postscript points Each postscript point equals to 1/72 of an inch. 36 points are 1/2 of an inch. --bottom-margin=bm Set bottom margin. Default is 36 postscript points. --top-margin=tm Set top margin. Default is 36 postscript points. --left-margin=lm Set left margin. Default is 36 postscript points. --right-margin=rm Set right margin. Default is 36 postscript points. --gutter-width=gw Set gutter width. Default is 40 postscript points. --help Show summary of options. --header Draw page header for each page. --markup Interpret the text as pango markup. --lpi Set the lines per inch. This determines the line spacing. --cpi Set the characters per inch. This is an alternative method of specifying the font size. --stretch-chars Indicates that characters should be stretched in the y-direction to fill up their vertical space. This is similar to the texttops behaviour. AUTHOR
paps was written by Dov Grobgeld <dov.grobgeld@gmail.com>. This manual page was written by Lior Kaplan <kaplan@debian.org>, for the Debian project (but may be used by others). April 17, 2006 PAPS(1)
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