Category Archives: Network

SNMP is the Simple Network Management Protocol

The SNMP protocol is used by network management systems to communicate with network elements.For this to work, the network element must be equipped with an SNMP agent. Most professional-grade network hardware comes with an SNMP agent built in. These agents must be enabled and configured to communicate with the network management system.Operating systems, such as Unix… Read More »

What is Network File System (NFS)

Network File System (NFS) is a network file system protocol originally developed by Sun Microsystems in 1984, allowing a user on a client computer  to access files over a network in a manner similar to how local storage is accessed. NFS, like many other protocols, builds on the Open Network Computing Remote Procedure Call (ONC RPC)… Read More »

The VPN agent is not responding

scmuser created the topic: The VPN agent is not responding Hi, While using CISCO ANYCONNECT VPN client, i get following message The VPN agent is not responding.Please contact your IT administrator for assistance. i find cisco services is running fine. I un-installed and installed many times but same issues. plz suggest what need to be… Read More »

How to Start and Stop Nagios Core | Nagios Tutorial

Starting Nagios Core Init Script: The easiest way to start the Nagios Core daemon is by using the init script like so: /etc/rc.d/init.d/nagios start Manually: You can start the Nagios daemon manually with the -d command line option like so: /usr/local/nagios/bin/nagios -d /usr/local/nagios/etc/nagios.cfg Restarting Nagios Core Restarting/reloading is nececessary when you modify your configuration files… Read More »

Steps to Start-Stop Nagios XI Server | Nagios XI Tutorial

How to start and stop Naxios XI Server? How to stop Naxios XI Server? service nagiosxi stop service npcd stop service ndo2db stop service nagios stop service postgresql stop service mysqld stop service httpd stop How to start Naxios XI Server? service httpd start service mysqld start service postgresql start service nagios start service ndo2db… Read More »

Step by step procedures to Install Nagios agent in Linux

Step by step procedures to Install Nagios agent in Linux > cd /tmp > mkdir software > cd software > yum install wget > wget > tar -zxvf linux-nrpe-agent.tar.gz > cd linux-nrpe-agent > ./fullinstall

Step by step procedures to Install Nagios XI Server in Centos 7

Step by step procedures to Install Nagios XI Server in Centos 7 #Update your centos os > yum install update > yum install wget # to install network utility e.g. ping. (Optional) > yum install net-tools > cd /tmp > mkdir software > cd /tmp/software # Download the Nagios latest package > wget >… Read More »

How to Install and Configure Nagios Server and Clients | Nagios Tutorial

Install and Configure Nagios Server and Clients Download the Nagios Server Source copy from You can also use the direct download links as below; > wget Extract the xi-5.2.0.tar.gz using > tar -zxvf xi-5.2.0.tar.gz Run the following commands to install it. > ./fullinstall At the end of installation, you will get the url… Read More »