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Email Notification In Nagios (CentOs 7)

Email Notification Setting It is enabled on some items by default but if you wants to change it, configure like follows. Install and start SMTP Server Set notification recipient. And Nagios sends notifications with mail command, so install it. It is possible to change notification setting...

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Install Nagios In CentOS 7

Install Nagios 4 It is an enterprise open source monitoring system. Install and start Apache httpd Install PHP Install Nagios Configure Nagios If Firewalld is running,allow HTTP service Access to the http://(nagios server’s hostname or IP address)/nagios/ from a client Install plugins...

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What is Phishing?

Phishing is a fraudulent attempt, usually made through email, to steal your personal information. The best way to protect yourself from phishing is to learn how to recognize a phish. Phishing emails usually appear to come from a well-known organization and ask for your personal information —...

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Centos Linux - Firewall-SeLinux

Firewall [1] It's possible to show Service Status of FireWall like follows. (enabled by default) [root@higuys ~]# systemctl status firewalld ● firewalld.service - firewalld - dynamic firewall daemon Loaded: loaded (/usr/lib/systemd/system/firewalld.service; disabled; vendor preset:...

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CentOs-Add an User

Add an User [1] Add an User "cent" as an example below. root@higuys ~]# useradd cent [root@higuys ~]#passwd cent Changing password for user cent. New UNIX password:# set password Retype new UNIX password:# confirm passwd: all authentication tokens updated successfully. [root@higuys ~]#...

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Install CentOs 7

Install Centos 7 [1] Insert CentOS install disk and start the Computer. Then, Following screen is displayed, Push Enter key to proceed. [2] Select the language you'd like to use during the installation. [3] This is the default screen for some basic configuration. First, set timezone,...

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Download CentOs 7

Download CentOS 7 1] This is the configuration Examples for CentOS 7.x that is compatible with Red Hat Enterprise Linux 7.x.Download the CentOS 7.3 ISO file for installation from the following site.⇒ http://mirror.centos.org/centos-7/7.3.1611/isos/x8...Create an Installation disk for...

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What is Firewall?

A firewall is a network security system, either hardware- or software-based, that uses rules to control incoming and outgoing network traffic. A firewall acts as a barrier between a trusted network and and an untrusted network. A firewall controls access to the resources of a network through a...

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