Category: Tutorials

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Remove Old Kernels in Ubuntu

For Ubuntu installations (prior to Ubuntu version 15.10) with separate / boot partition , it may fill up after installing several updates . The issue occurs because older kernel versions are not automatically removed. In this article, we’ll show you how to...

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OpenSSH public key authentication under Ubuntu

This article shows how SSH access is configured for public-key authentication . To do so, a key pair is created on the client, the public part of the keys are transferred to the server, and the server is set up for...

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SSH Key Login

Note: This article applies to older SSH versions (SSH version 1). For the latest information on SSH key logins, see OpenSSH Public Key Authentication under Ubuntu . SSH Config for SSH Key customize On the remote server, the...

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SSH root forbid login under Debian

If you want to ban direct SSH root login on Debian, you need at least one additional user who can log on to the server, in addition to the root user. Use this user to...

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Set up the FTP server under Debian

ProFTPD is a widely-used, well-configurable FTP server for UNIX-based operating systems. This article shows the installation and configuration of ProFTPD in version 1.3.5b-4 on Debian Linux. In the example shown, a TLS encryption is configured on the FTP server to encrypt...

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SSH Login under Debian with fail2ban

The tool fail2ban , written in Python, aims to secure server services against DoS attacks. It checks log files for predefined patterns and temporarily blocks the corresponding IP addresses if the failed access is repeated. This article shows you how...

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Ubuntu: How to use Windows programs

With the “Wine” tool you can use Windows programs under Ubuntu. The freeware is free and is constantly developed further. Several million users already use the tool. We will show you how the program works. The change...

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MongoDB

Series: Introduction to the MEAN Stack Part 1: Definition of the MEAN stack Part 2: Setup of the MEAN stack Part 3: Node.js Part 4: npm Part 5: Connect Part 6: Express Part 7: MongoDB Part 8: Mongoose Part 9: REST Part 10: Baucis...

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Restangular

Series: Introduction to the MEAN Stack Part 1: Definition of the MEAN stack Part 2: Setup of the MEAN stack Part 3: Node.js Part 4: npm Part 5: Connect Part 6: Express Part 7: MongoDB Part 8: Mongoose Part 9: REST Part 10: Baucis...

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AngularJS

Series: Introduction to the MEAN Stack Part 1: Definition of the MEAN stack Part 2: Setup of the MEAN stack Part 3: Node.js Part 4: npm Part 5: Connect Part 6: Express Part 7: MongoDB Part 8: Mongoose Part 9: REST Part 10: Baucis...