Selinux;firewall Firewall

One:

SELinux is the abbreviation for "security-enhanced linux", developed by the NSA "nsa=the National security agency" and SCC (secure Computing Corporation) An expanded mandatory access control security module for Linux. (Excerpt from Baidu Encyclopedia)

SELinux has a choice of "disabled""permissive","enforcing"3.

The default for my computer is enforcing.

Check if SELinux is on command sestatus if the status is enabled, SELinux is turned on

Permanently close SELinux

Vim/etc/selinux/config

Default selinux=enforcing

We modified to SELinux =disabled

Then reboot

Re-use Sestatus is the disabled state.

II: CentOS Firewall off

CentOS 7.0 uses firewall as a firewall by default, while previous versions use Iptables

Iptables Close Command iptables stop

Firewall command SYSTEMCTL status FIREWALLD

Firewall-cmd--state If the status is running means run

Firewall off

Systemctl Stop Firewalld.service

[Email protected]/]# Firewall-cmd--state

Not running firewall is off

Systemctl Disable Firewalld.service prohibit the boot of the firewall.

Removed Symlink/etc/systemd/system/dbus-org.fedoraproject.firewalld1.service.

Removed Symlink/etc/systemd/system/basic.target.wants/firewalld.service.

Selinux;firewall Firewall