Initial firewall and selinux configure Centos 7, RHEL 7

Firewall

If the Firewall on the server is unnecessarry (for example, because some firewalls are allready running in your LAN ), then stop it like follows

[root@amir ~]# systemctl  stop  firewalld

[root@amir ~]# systemctl  disable  firewalld

rm '/etc/systemd/system/dbus-org.fedoraproject.FirewallD1.service'

rm '/etc/systemd/system/basic.target.wants/firewalld.service'

Selinux

If you'd like to disable SELinux (Security-Enhanced Linux), configure like follows.

[root@amir ~]# vi /etc/selinux/config

# This file controls the state of SELinux on the system.

# SELINUX= can take one of these three values:

#     enforcing - SELinux security policy is enforced.

#     permissive - SELinux prints warnings instead of enforcing.

#     disabled - No SELinux policy is loaded.

SELINUX=disabled               # change

# SELINUXTYPE= can take one of these two values:

#     targeted - Targeted processes are protected,

#     minimum - Modification of targeted policy. Only selected processes are protected.

#     mls - Multi Level Security protection.

SELINUXTYPE=targeted

[root@amir ~]# reboot