Cron is a daemon on linux and unix based operating systems. Cron is a job scheduler which we can be used to configure jobs or run commands at a specific time in a day, month or year. Cron is quite configurable enabling us to run jobs and commands periodically, at fixed times or dates and also […]
This is the next post in a series of posts about PostgreSQL and is actually a continuation from post on “PostgreSQL Create User – Manage Users“. If you followed my post on “PostgreSQL Create User – Manage Users” then you successfully created your firstPostgreSQL users and also assigned them desired rights and privileges. The next step is to […]
As promised in one of the previous posts on “Install PostgreSQL Database on CentOS 6” here is a post describing how to manage PostgreSQL users (PostgreSQL create user, delete user, …). By now you have probably successfully installed and started PostgreSQL server on your linux machine, but empty PostgreSQL server is not useful in any way. The next […]
SSH has a huge number of features, SSH Tunnel being just one of them. SSH Tunnel is a secure connection between two machines and is often refered to as “SSH Tunneling” or also “Port Forwarding”. Using the “ssh” command we can bind a desired port on a local machine to a desired port on a remote […]
Want to install and configure Postfix with Dovecot on CentOS 6? Or are you wondering whatPostfix orDovecot is? In case you are wondering (i hope not, since you stumbled on this page), Postfix is a mail server or a bit more fancy word for it – Mail Transfer Agent (MTA). Actually MTA tells you what this application does. It transfers the […]
If you have a Linux server out there somewhere in the internet, you probably want to secure it and reflect some of the most common attacks to your server. If you are just starting out with your first server you must know, your server will be attacked. There are automated bots and scripts that scan […]
IPTables is a service on linux systems, which allows a system administrator to configure rules and chains in tables provides by the Linux kernel firewall. IPTables is a Linux firewall service which enables you to accept, reject or drop (,…) packages based on the rules you applied. In this post we will learn how to cofigure iptables […]
Today i was re-organizing my desktop computer running Fedora 20. Actually i installed a new SSD drive in it and been throwing data around to organize/create new partitions and filesystems – just the way i like it! 🙂 Since i decided to put my VirtualBox machine files on a separated partition i ran into the […]
Secure Shell (SSH) is a cryptographic network protocol for secure data communication. SSH is widely used on linux machines for console access and remote management. It is a server – client oriented network protocol which enables a secure communication between two network computers. The port on which SSH Server runs by default is 22. If […]
There are two possible configurations for Apache Proxy Server and we will present installation and configuration of both types this how to. Forward Apache Proxy is a proxy configuration that is commonly used in companies and it enables users to access the internet. Users or clients must configure their browsers or operating system to use a proxy server (Forward Apache […]
Since i have been getting alot of questions on how to increase root partition size on a linux system i decided (finally!) to write a how to about this topic. Linux root partition is different from all other partitions on your system since it holds all of the system files required for your system to run […]
So CentOS 7 is out and there are quite some differences from it’s predecessor CentOS 6. This is why i decided to write a new how to installing Nagios Core 4.0.8 on the latest fully updated CentOS 7 minimal installation – Install Nagios on CentOS 7. The Firewalld and SELinux are both enabled and running in […]
