Why netstat not showing user name using "-p" option ?

Solution Verified - Updated -

Issue

  • Netstat command not showing user in PID/program field.
# netstat -plant
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address    Foreign Address        State           PID/Program name
tcp        0      0 xxxxxx:34427           xxxx:3268           ESTABLISHED           20430/sssd_be       
tcp        0      0 xxxxxx:22                  xxxx:44944         ESTABLISHED           20902/sshd      <<== No user

# netstat -plant
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address  Foreign Address    State                 PID/Program nam       
tcp        0              0         xxxxxx:34427  xxxxxx:3268     ESTABLISHED   20430/sssd_be       
tcp        0              0         xxxxxx:22         xxxxxx:44944   ESTABLISHED  20902/sshd:  user1 [p    <<== user1

Environment

  • Red Hat Enterprise Linux 6
  • net-tools

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