November 25, 2017

How to Reconfigure a FreeBSD Port

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Usually, while building a port you can select certain build options. Somehow it happens that you want to reconfigure this port with other build options later. With this instruction you can clear out the port configuration option and start over again.

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How to Create a Jail on FreeBSD

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You need to partition your system in several independent systems? With the framework ezjail you can create and modify jails on FreeBSD that have a virtual environment. A jail runs totally independent from the host system and can have its own files, processes and user accounts. There is no big difference to a real system but now you can securely separate your applications.

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How to Install Ruby on FreeBSD

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The object-oriented programming language is available as a port on FreeBSD. Ruby combines syntax inspired by Perl with Smalltalk-like features and is influenced by Eiffel and Lisp as well. With Ruby you can make use of multiple programming paradigms, including functional, object oriented, imperative and reflective. The automatic memory management and a dynamic type system are one of the main key factors to use Ruby.

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How to Tunnel a Remote Port to a Local Port with SSH

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Sooner or later you have to restrict access to a specific application from outside the server by blocking a port with a firewall. This is a common scenario when using a development web server. You want to access the service but you do not want to leave it open to the entire world. At this point SSH can help you to create a tunnel.

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How to Clear DNS Cache in Mac OS X

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Mac OSX caches the DNS requests to speed up lookups. When you configure your DNS server you don’t want to work with cached values.

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How to Configure SFTP with Chroot-Jail on CentOS

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Did you know that FTP transfers your password in plain text? Instead of FTP you can use the more secure SFTP. The SFTP service is based on SSH which encrypts all passwords and data. You do not even have to install a separate service, to do everything what you need is to configure SSH properly.

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Cool Bash Aliases for FreeBSD

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Every day, the shell is your most used program. Using aliases can make your live much easier. In the following we have listed a few useful aliases to brighten up your day.

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How to Copy a File From One Server to Another With SCP

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Copying files from one server to another is an often-repeated activity. You’ve set up a SSH service on the server you want to copy a file and a SSH client from where you want to copy a file. For this purpose you can use SCP. It is really easy.

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Google Android Must Have Apps

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I would like to list my favorite apps that I find particularly useful on the Google Android platform.

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How to Disable SSH root Login

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When you run a server, SSH (Secure Shell) is a service with which you have to do on each case. It is important for the security of your server that the login with the root user is locked from outside. We show you how to do it. It’s very simple.

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