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SSL secured webstites or HTTPS has now become a must to have on website, especially those handling sensitive client information. Having a HTTPS enabled website means that a intruder can’t intrude to communication between...

Centralizing Logs TIPS & TRICKSOCTOBER 25, 2018 A brief on Popular Tools for Centralizing Logs Log files are a record of important events and transactions from all your IT equipment, applications, and networks that helps in identifying and troubleshooting problems that arise. Logging is something that application developers, system..

Both du & df commands are important utilities of Linux system & shows disk usage of Linux filesystem. Here we will share usage of...

Learn how to Dual boot Ubuntu 18.xx along with Windows 10. Ubuntu 18.04 aka Bionic Beaver was released on April 26th, 2018 with a lot of changes on front end as well as on backend. Major change that anybody who has ever used Ubuntu, will notice is the Desktop Environment.

Reverse proxy is a kind of a proxy that takes http or https request & transfers/distributes them to one or more backend servers. In this tutorial, we will be using three instances of Apache tomcat server & will than use apache reverse proxy as load balancer to distribute & redirect the requests to these three tomcat servers.

SVN is a software versioning & revision control system, that has been around for a while now but is still being used by many. Though in recent years, Git & Git related applications are...

Github is a web based implementation of Git. Similar to Git, it is a distributed version control system & also offers the source code management functionality offer by Git. Github has all the features...

OMD or Open Monitoring Distribution is one of the best things that will make every System Admin’s day. OMD is an open source server, network monitoring tool that comes bundled with a number of...

Monitoring is one of the main task that anyone SystemAdmin or even a normal user should know about to get the best out of their systems/servers & avoid any issues. In this tutorial, we...

Swap file or swap space is a file on Linux file-system that is used to hold programs or pages, in the event that the Physical memory aka RAM of the machine is full. Swap...

Vagrant is tool for building & managing virtual machines environment, especially development environments. It provides easy to use & easy to replicate/reproducible environment built on top of technologies like Docker, VirtualBox, Hyper-V, Vmware ,...

Linux is known for its high standards of security & there are very low amount of viruses that has been known to infect a Linux system. But in the recent times as technology is...

Connecting a filename to the actual data is managed by the filesystem using a table or data structure, which is called a title allocation table. In the Linux filesystem, an Inode is the actual entry point to a specific file’s data on the hard disk. To simplify, you can just consider that the Inode represents the actual data of a file.

PostgreSQL or Postgres, is a very powerful, highly scalable relational database system, that peovided implementation of SQL query language. It is open source & can be installed on Unix/Linux system as well as on...

Crontab is very important utility in Linux systems & is used to set up time based job scheduling. With the help of Crontab or cron, we can execute a command or a script to...

Network Mapper or NMAP command open source security tool & is said to be the best port scanner. It is mainly used for auditing the network security & for penetration testing. Nmap command displays...

Learn how to add and remove users in Ubuntu in this guest post by Jay LaCroix, a Linux expert and the author of Mastering Ubuntu Server – Second Edition. Creating users in Ubuntu can be...

Redis is an open source in-memory data structure store that is mainly used as a caching server but can also be used as a database or as a message broker. We have already discussed...

ModSecurity WAF (Web Application Firewall ) is an open source software firewall that is used to safeguard applications from attacks & unauthorised access. ModSecurity WAF can be used as a module with already installed...

SELinux or Security Enhanced Linux is advanced access control mechanism which was developed by US security agency NSA to prevent malicious intrusions & tempering. It implements MAC (Mandatory Access control) over already present DAC (Discretionary Access Control ) i.e. read, write , execute permissions.