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## List only Listening TCP ports and the owning process
[root@rhel7server1 ~]# netstat -tlnp
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 0.0.0.0:111 0.0.0.0:* LISTEN 692/rpcbind
tcp 0 0 192.168.122.1:53 0.0.0.0:* LISTEN 1903/dnsmasq
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 1268/sshd
tcp 0 0 127.0.0.1:631 0.0.0.0:* LISTEN 1266/cupsd
tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN 1544/master
tcp 0 0 127.0.0.1:6010 0.0.0.0:* LISTEN 2172/sshd: root@pts
tcp6 0 0 :::111 :::* LISTEN 692/rpcbind
tcp6 0 0 :::22 :::* LISTEN 1268/sshd
tcp6 0 0 ::1:631 :::* LISTEN 1266/cupsd
tcp6 0 0 ::1:25 :::* LISTEN 1544/master
tcp6 0 0 ::1:6010 :::* LISTEN 2172/sshd: root@pts
## Limit to ipv4 only
[root@rhel7server1 ~]# netstat -tlnp4
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 0.0.0.0:111 0.0.0.0:* LISTEN 692/rpcbind
tcp 0 0 192.168.122.1:53 0.0.0.0:* LISTEN 1903/dnsmasq
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 1268/sshd
tcp 0 0 127.0.0.1:631 0.0.0.0:* LISTEN 1266/cupsd
tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN 1544/master
tcp 0 0 127.0.0.1:6010 0.0.0.0:* LISTEN 2172/sshd: root@pts
## List only Listening UDP ports and the owning process
[root@rhel7server1 ~]# netstat -ulnp
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
udp 0 0 0.0.0.0:5353 0.0.0.0:* 719/avahi-daemon: r
udp 0 0 0.0.0.0:38263 0.0.0.0:* 719/avahi-daemon: r
udp 0 0 0.0.0.0:866 0.0.0.0:* 692/rpcbind
udp 0 0 192.168.122.1:53 0.0.0.0:* 1903/dnsmasq
udp 0 0 0.0.0.0:67 0.0.0.0:* 1903/dnsmasq
udp 0 0 0.0.0.0:68 0.0.0.0:* 1000/dhclient
udp 0 0 0.0.0.0:111 0.0.0.0:* 692/rpcbind
udp6 0 0 :::866 :::* 692/rpcbind
udp6 0 0 :::111 :::* 692/rpcbind
## Limit to ipv4 only
[root@rhel7server1 ~]# netstat -ulnp4
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
udp 0 0 0.0.0.0:5353 0.0.0.0:* 719/avahi-daemon: r
udp 0 0 0.0.0.0:38263 0.0.0.0:* 719/avahi-daemon: r
udp 0 0 0.0.0.0:866 0.0.0.0:* 692/rpcbind
udp 0 0 192.168.122.1:53 0.0.0.0:* 1903/dnsmasq
udp 0 0 0.0.0.0:67 0.0.0.0:* 1903/dnsmasq
udp 0 0 0.0.0.0:68 0.0.0.0:* 2344/dhclient
udp 0 0 0.0.0.0:68 0.0.0.0:* 1000/dhclient
udp 0 0 0.0.0.0:111 0.0.0.0:* 692/rpcbind
## List both TCP and UDP listening ports and the owning process
[root@rhel7server1 ~]# netstat -tulnp
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 0.0.0.0:111 0.0.0.0:* LISTEN 692/rpcbind
tcp 0 0 192.168.122.1:53 0.0.0.0:* LISTEN 1903/dnsmasq
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 1268/sshd
tcp 0 0 127.0.0.1:631 0.0.0.0:* LISTEN 1266/cupsd
tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN 1544/master
tcp 0 0 127.0.0.1:6010 0.0.0.0:* LISTEN 2172/sshd: root@pts
tcp6 0 0 :::111 :::* LISTEN 692/rpcbind
tcp6 0 0 :::22 :::* LISTEN 1268/sshd
tcp6 0 0 ::1:631 :::* LISTEN 1266/cupsd
tcp6 0 0 ::1:25 :::* LISTEN 1544/master
tcp6 0 0 ::1:6010 :::* LISTEN 2172/sshd: root@pts
udp 0 0 0.0.0.0:5353 0.0.0.0:* 719/avahi-daemon: r
udp 0 0 0.0.0.0:38263 0.0.0.0:* 719/avahi-daemon: r
udp 0 0 0.0.0.0:866 0.0.0.0:* 692/rpcbind
udp 0 0 192.168.122.1:53 0.0.0.0:* 1903/dnsmasq
udp 0 0 0.0.0.0:67 0.0.0.0:* 1903/dnsmasq
udp 0 0 0.0.0.0:68 0.0.0.0:* 1000/dhclient
udp 0 0 0.0.0.0:111 0.0.0.0:* 692/rpcbind
udp6 0 0 :::866 :::* 692/rpcbind
udp6 0 0 :::111 :::* 692/rpcbind
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