[root@localhost ~]# yum install -y -q net-tools
Package net-tools-2.0-0.17.20131004git.el7.x86_64 already installed and latest version
[root@localhost ~]# netstat -plnt
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      967/sshd
tcp        0      0 127.0.0.1:25            0.0.0.0:*               LISTEN      1682/master
tcp6       0      0 :::80                   :::*                    LISTEN      10624/httpd
tcp6       0      0 :::22                   :::*                    LISTEN      967/sshd
tcp6       0      0 ::1:25                  :::*                    LISTEN      1682/master
[root@localhost ~]# iptables -L
Chain INPUT (policy ACCEPT)
target     prot opt source               destination
ACCEPT     all  --  anywhere             anywhere             ctstate RELATED,ESTABLISHED
ACCEPT     all  --  anywhere             anywhere
INPUT_direct  all  --  anywhere             anywhere
INPUT_ZONES_SOURCE  all  --  anywhere             anywhere
INPUT_ZONES  all  --  anywhere             anywhere
DROP       all  --  anywhere             anywhere             ctstate INVALID
REJECT     all  --  anywhere             anywhere             reject-with icmp-host-prohibited

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination
ACCEPT     all  --  anywhere             anywhere             ctstate RELATED,ESTABLISHED
ACCEPT     all  --  anywhere             anywhere
FORWARD_direct  all  --  anywhere             anywhere
FORWARD_IN_ZONES_SOURCE  all  --  anywhere             anywhere
FORWARD_IN_ZONES  all  --  anywhere             anywhere
FORWARD_OUT_ZONES_SOURCE  all  --  anywhere             anywhere
FORWARD_OUT_ZONES  all  --  anywhere             anywhere
DROP       all  --  anywhere             anywhere             ctstate INVALID
REJECT     all  --  anywhere             anywhere             reject-with icmp-host-prohibited

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination
OUTPUT_direct  all  --  anywhere             anywhere

Chain FORWARD_IN_ZONES (1 references)
target     prot opt source               destination
FWDI_public  all  --  anywhere             anywhere            [goto]
FWDI_public  all  --  anywhere             anywhere            [goto]

Chain FORWARD_IN_ZONES_SOURCE (1 references)
target     prot opt source               destination

Chain FORWARD_OUT_ZONES (1 references)
target     prot opt source               destination
FWDO_public  all  --  anywhere             anywhere            [goto]
FWDO_public  all  --  anywhere             anywhere            [goto]

Chain FORWARD_OUT_ZONES_SOURCE (1 references)
target     prot opt source               destination

Chain FORWARD_direct (1 references)
target     prot opt source               destination

Chain FWDI_public (2 references)
target     prot opt source               destination
FWDI_public_log  all  --  anywhere             anywhere
FWDI_public_deny  all  --  anywhere             anywhere
FWDI_public_allow  all  --  anywhere             anywhere
ACCEPT     icmp --  anywhere             anywhere

Chain FWDI_public_allow (1 references)
target     prot opt source               destination

Chain FWDI_public_deny (1 references)
target     prot opt source               destination

Chain FWDI_public_log (1 references)
target     prot opt source               destination

Chain FWDO_public (2 references)
target     prot opt source               destination
FWDO_public_log  all  --  anywhere             anywhere
FWDO_public_deny  all  --  anywhere             anywhere
FWDO_public_allow  all  --  anywhere             anywhere

Chain FWDO_public_allow (1 references)
target     prot opt source               destination

Chain FWDO_public_deny (1 references)
target     prot opt source               destination

Chain FWDO_public_log (1 references)
target     prot opt source               destination

Chain INPUT_ZONES (1 references)
target     prot opt source               destination
IN_public  all  --  anywhere             anywhere            [goto]
IN_public  all  --  anywhere             anywhere            [goto]

Chain INPUT_ZONES_SOURCE (1 references)
target     prot opt source               destination

Chain INPUT_direct (1 references)
target     prot opt source               destination

Chain IN_public (2 references)
target     prot opt source               destination
IN_public_log  all  --  anywhere             anywhere
IN_public_deny  all  --  anywhere             anywhere
IN_public_allow  all  --  anywhere             anywhere
ACCEPT     icmp --  anywhere             anywhere

Chain IN_public_allow (1 references)
target     prot opt source               destination
ACCEPT     tcp  --  anywhere             anywhere             tcp dpt:ssh ctstate NEW

Chain IN_public_deny (1 references)
target     prot opt source               destination

Chain IN_public_log (1 references)
target     prot opt source               destination

Chain OUTPUT_direct (1 references)
target     prot opt source               destination