RHEL7CentOS7 - Installation, Configuration & Management

How to Setup Naemon Networking Monitoring Tool in Linux Naemon is an Open Source system and network monitoring application which watches hosts and other services that you specify, alerts you when things go bad and notifies you when they get better. Naemon is based on Nagios 4.0.2 and aims to be a drop in replacement for Nagios. Naemon Suite is currently roughly equivalent to Nagios Core, which makes Naemon Core the equivalent of "Nagios Core Core". Naemon is the general term of the entire "Naemon Suite" that consists of two different parts, Naemon Core and the Thruk Monitoring web interface. We will generally refer to naemon Suite as just Naemon. In this article, we will install naemon in centos 7 and ubuntu 16.04 and explore its usage in Centos via NPRE. Features of Naemon → Monitoring of network services  like SMTP, POP3, HTTP, NNTP, PING, FTP etc.) → Monitoring of host resources (processor load, disk usage, memory usage etc.) → Simple plugin...

Linux ntopng - Network Monitoring Tool Installation (Screenshots) Nowdays computers are connected between each other. From the small area such as your home Local Area Network (LAN) until the the biggest one which we call - Internet. When you are managing a network computer, you are managing one of the most critical component. Since most of developed application is web based application, the network between critical. There is why we need a network monitoring tool. One of the best network monitoring tool is called ntop. From Wikipedia “ ntop is a network probe that shows network usage in a way similar to what top does for processes. In interactive mode, it displays the networkstatus on the user's terminal. In Web mode, it acts as a web server, creating a HTML dump of the network status. It supports a NetFlow/sFlowemitter/collector, a HTTP-based client interface for creating ntop-centric monitoring applications, and RRD for persistently storing traffic statistics ” ...

Setting up MASTER SLAVE DNS setup with BIND In this tutorial we will discuss how we can create a master slave DNS server setup.  In Master Slave DNS setup when a slave is created, it obtains an identical copy of all master records using zone transfer method.  Master-slave have easy replication mechanism,  as soon as a change is made on Master server, it notifies the slave & slave then fetches the data. All process taking mere seconds. Scenario Master server   dns.ltechlab.com                         Slave server    slave.ltechlab.com IP address          192.168.1.100                               IP address     192.168.1.110 We have already discussed how we can create a Master server. If you have not don...

Beginner’s guide to implementing DNS server using BIND As we know that every machine on a network has a IP address assigned to it, which is like a unique address of that machine in our network. In similar way, every website on internet has a IP address associated to it but we normally don’t use those IP addresses to access the website rather we use a name like google.com or facebook.com. Just imagine how hard would it be to remember IP addresses of all these website, if these names for not in use. So, how does these name translate into IP addresses, that’s because of DNS servers. DNS DNS (short for Domain Name System) is a service which translates IP address into domain name & vice-versa. In environment with only a limited numbers of Linux machines, we can make entries in  /etc/hosts  file for associating an IP address with a name but when you have a large infrastructure with lots and lots of systems/resources,  /etc/hosts  will not work. ...