Why hyphen ( - ) is seen in the "PID/Programe name" column in the "netstat" output for "TIME_WAIT" connections in Red Hat Enterprise Linux ?
Issue
- Why do we see
-in thePID/Programe namecolumn in below output forTIME_WAITconnections ?
# netstat -nap
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 192.X.X.X:17800 192.X.X.X:22153 TIME_WAIT -
tcp 0 0 192.X.X.X:38283 192.X.X.X:17805 ESTABLISHED 987/httpd.worker
tcp 0 0 192.X.X.X:38278 192.X.X.X:17805 ESTABLISHED 933/httpd.worker
tcp 0 0 192.X.X.X:1055 10.X.X.X:4336 TIME_WAIT -
tcp 0 0 192.X.X.X:38323 192.X.X.X:17805 ESTABLISHED 32448/httpd.worker
tcp 0 0 192.X.X.X:37902 192.X.X.X:17805 TIME_WAIT -
tcp 0 0 192.X.X.X:37928 192.X.X.X:17805 ESTABLISHED 542/httpd.worker
tcp 0 0 192.X.X.X:38114 192.X.X.X:17805 TIME_WAIT -
tcp 0 0 192.X.X.X:38045 192.X.X.X:17805 ESTABLISHED 594/httpd.worker
tcp 0 0 192.X.X.X:38043 192.X.X.X:17805 TIME_WAIT -
tcp 0 0 192.X.X.X:38022 192.X.X.X:17805 TIME_WAIT -
tcp 0 0 192.X.X.X:38072 192.X.X.X:17805 TIME_WAIT -
tcp 0 0 192.X.X.X:38067 192.X.X.X:17805 TIME_WAIT -
tcp 0 0 192.X.X.X:20802 192.X.X.X:35225 TIME_WAIT -
Environment
-
Red Hat Enterprise Linux (All Versions)
-
Netstat utility.
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