If SELinux / iptables is enabled in Linux PC and it is acting as a server, we need to add specific entries to allow each and every type of traffic or easy way is to disable it completely.
To disable SELinux give following commands:
echo 0 > /selinux/enforce
vim /etc/selinux/config
To disable iptables issue following commands.
chkconfig iptables off
service iptables stop
