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Hello guys, in this tutorial we are going to learn how to install and configure iSCSI storage server on Ubuntu 18.04. Well, iSCSI, an acronym for Internet Small Computer System Interface, is a Storage Area Network protocol that is used by the organizations to facilitate online storage management. It relies on TCP/IP networks to send SCSI commands between the initiator...

In our previous tutorial, we covered how to install and configure iSCSI storage server on Ubuntu 18.04 and in this tutorial, we are going to learn how to implement the same on CentOS 7 and other RHEL derivatives. In this deployment, we will be using two CentOS 7 servers, one acting as the iSCSI target while the other functions as...

In this tutorial we are going to learn how to build and configure Nagios Core from the source code for server resource consumption and availability monitoring on Ubuntu 18.04. In our last tutorial, we covered how to Install and Configure Nagios Core from Ubuntu repositories. Installing Nagios Core From Source on Ubuntu 18.04 Installation from the source ensures that we get latest...

In this tutorial we are going to learn how to install and configure Nagios Core from Ubuntu repositories for server resource consumption and availability monitoring on Ubuntu 18.04. Nagios is an enterprise grade free and open source software that can be used to monitor servers, applications and networks. It also offers alerting services for servers, switches, applications and services. Nagios...

In this tutorial, we will discuss how to configure NFS server on Ubuntu 18.04 server. NFS operates on a server-client architecture and therefore to demonstrate how to configure NFS server on Ubuntu 18.04 server to share directories and files over the network and Ubuntu 18.04 desktop as our NFS client, follow through this guide. Network File system (NFS) is a commonly...

In this tutorial, we are going to learn how to enable ssh server on OPNsense. So you have installed OPNsense and can be able to login via web gui but login via ssh is timing out? # ssh -v [email protected] OpenSSH_7.2p2 Ubuntu-4ubuntu2.4, OpenSSL 1.0.2g 1 Mar 2016 debug1: Reading configuration data /etc/ssh/ssh_config debug1: /etc/ssh/ssh_config line 19: Applying options for * debug1: Connecting to 192.168.10.23...

In this tutorial, we are going to learn how to configure static IP Addresses on Ubuntu 18.04 server using netplan command. To manage network interfaces, Ubuntu 18.04 uses the NetPlan utility. The NetPlan command has replaced the commonly used static interfaces configuration file, /etc/network/interfaces, with various network configuration files in the /etc/netplan/ directory. The files in this directory are in...

In this tutorial, we are going to learn how to enable the ICMP ping response on QRadar SIEM. So you have installed IBM QRadar SIEM and trying to verify its connectivity using ping command but you realized that ping icmp requests are  being dropped? Well, this happens because by default, QRadar SIEM drops all ICMP traffic received on the management...

In this tutorial, we will learn how to check hardware information, block devices and filesystems on Linux system. Many a time as we interact with the Linux system in our day to day activities, there may arise a need to check on the mounted filesystems, available block devices, disk space usage, system hardware information or even file space usage. Well,...

When commands are run on a system, various processes associated with them are created. Among the roles of a system administrator, being able to determine what processes are running, monitor and manage them is a critical skill. There are several program tools that can be used to achieve this. In this tutorial, we are going to explore some of...