[CentOS] Install Firewalld

I am trying to install Firewalld.

I am using CENTOS 7.
Please help me to solve the error.
[root at ns1 httpd]# systemctl enable firewalld
[root at ns1 httpd]# systemctl start firewalld
[root at ns1 httpd]# systemctl status firewalld
firewalld.service - firewalld - dynamic firewall daemon
   Loaded: loaded (/usr/lib/systemd/system/firewalld.service; enabled)
   Active: inactive (dead) since Thu 2015-11-26 02:43:16 SGT; 11s ago
  Process: 35808 ExecStart=/usr/sbin/firewalld --nofork --nopid
$FIREWALLD_ARGS (code=exited, status=0/SUCCESS)
 Main PID: 35808 (code=exited, status=0/SUCCESS)

Nov 26 02:43:16 ns1.currencybooking.com systemd[1]: Started firewalld -
dynamic firewall daemon.
Nov 26 02:43:16 ns1.currencybooking.com firewalld[35808]: 2015-11-26
02:43:16 ERROR: ebtables not usable, disabling ethernet bridge firewall.
Nov 26 02:43:16 ns1.currencybooking.com firewalld[35808]: 2015-11-26
02:43:16 FATAL ERROR: No IPv4 and IPv6 firewall.
Nov 26 02:43:16 ns1.currencybooking.com firewalld[35808]: 2015-11-26
02:43:16 ERROR: Raising SystemExit in run_server
[root at ns1 httpd]# ERROR: ebtables not usable, disabling ethernet bridge
firewall.^C

[root at ns1 httpd]# firewall-cmd --state
not running


Shiva Prasad Nath
92981134