Category Archives: Linux (Ubuntu)

First 64 bit Raspberry Pi 3 released and here are the complete specs and pricing

First 64 bit Raspberry Pi 3 released and here are the complete specs and pricing
A new version of the Raspberry PI 3 has released and it is amazing. It is 10x the performance of Raspberry Pi 1. Here are the complete specs for new 64-bit credit card size computer.
Fig.01: Raspberry Pi 3 - Model B - 64 Bit ARMv8 with 1G RAM and WiFi
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Increase your IPv4 security with Fail2Ban and Tinyhoneypot on Debian Jessie

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Increase your IPv4 security with Fail2Ban and Tinyhoneypot on Debian Jessie
It is a five minutes’ exercise to increase security on an IPv4 addressed machine. The purpose of the setup described in this tutorial is to lock out port scanners and malicious port openers for a period of time.

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Configure Postfix to use Gmail as a Mail Relay

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Configure Postfix to use Gmail as a Mail Relay
If you have a Gmail account, you can configure your MTA to relay outgoing mail through Gmail. This gives you the benefit of Gmail’s reliability and robust infrastructure, and provides you with a simple means of sending email from the command line. In this tutorial, we will use Postfix as our MTA. Postfix is a free, open-source, actively maintained, and highly secure mail transfer agent.

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How to install and configure Solr 5.5 on Ubuntu 14.04

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How to install and configure Solr 5.5 on Ubuntu 14.04
Apache Solr is an enterprise-class open source search platform written in Java which enables you to create custom search engines that index databases, files, and websites. This tutorial will show you how to install the latest Solr version on Ubuntu 14.04. The steps will most likely work with later Ubuntu versions as well.

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How to Install Proxmox VE 4 on Debian 8 (Jessie)

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How to Install Proxmox VE 4 on Debian 8 (Jessie)
Proxmox Virtual Environment or short Proxmox VE is an Open Source server virtualization software based on Debian Linux. In this tutorial, I will show you the installation of Proxmox on a server that runs a minimal Debian 8 installation, e.g. in a datacenter.

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How to Block Email from certain TLDs (Top Level Domains) in ISPConfig

Zabihah Halal Vitamins
How to Block Email from certain TLDs (Top Level Domains) in ISPConfig
Spam is an annoyance and there’s a multitude of ways to counteract it. However spammers also get smarter and try to bypass filters and stuff. In addition, ICANN has lately approved a great mean gTLDs (generic Top Level Domains), like .biz, .info etc. Some of those gTLDs are, in my opinion, exclusive used by spammers. Lately, I have gotten a lot of spam from the .xyz gTLD. So the question was, how to block email coming from such domains using that gTLD.

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How to Install PostgreSQL 9.5 on Ubuntu (12.04 – 15.10)

Zabihah Halal Vitamins
How to Install PostgreSQL 9.5 on Ubuntu (12.04 – 15.10)
This tutorial shows the installation of the latest PostgreSQL 9.5 version on Ubuntu. We will use the official repository from postgresql.org, so you can update your server easily in future and get direct updates and patches from the database vendor. The steps have been tested with Ubuntu versions from 12.04 until 15.10.

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Linux: How to share files on a local network with woof

Zabihah Halal Vitamins
Linux: How to share files on a local network with woof
We’ve all been in this situation were we want to exchange files with other users connected to the same network as we are, and while there are tons of ways to do this, almost none of them is easy, quick, or simple enough. Thankfully, though, Linux users can utilize a small tool called “woof” that simplifies the process and makes the exchanging of files a walk in the park. What I am about to present in this short tutorial is suitable for home networks where convenience is the primary concern, and security isn’t an issue.

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Check Internet Speed with speedtest-cli on Ubuntu

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Check Internet Speed with speedtest-cli on Ubuntu
Internet connection speed is something that we always check at our homes and offices. The most common method that we use is by visiting a speed test website like speedtest.net. On that site, a javascript application is loaded in the web browser which selects the best (nearby) server based on the ping time and then the speed test results for that server are shown. Speedtest.net also uses a flash player to produce the result graphically.

The problem using these web based speed tests is that it does not allow you to schedule the speed test at regular intervals, e.g. as a cronjob and you can’t use them on headless servers. One application that can solve this problem is “speedtest-cli”. This application allows you to check your internet speed using the command line.

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