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Debian

Gnu Privacy Guard (GPG)

Post date: March 21, 2006, 19:03 Category: Security Views: 3231 Comments
Tutorial quote: GNU Privacy Guard, or GPG, is a free replacement for the famous encryption tool PGP written by Phil Zimmermann. It is a tool for secure communication and data storage. It can be used to encrypt data and to create digital signatures. Here we'll provide a quick introduction to generating a key-pair and using it for basic tasks.
Ubuntu

BAR - Backup archiver program

Post date: March 23, 2010, 14:03 Category: Software Views: 5193 Comments
Tutorial quote: BAR is backup archiver program to create compressed and encrypted archives of files that can be stored on a hard
disk, CD, DVD, or directly on a server via FTP, SCP, or SFTP. A server mode and a scheduler are integrated for
making automated backups in the background. A graphical front end that can connect to the (remote) server is included.
OpenBSD

Creating secure wireless access points with OpenBSD and OpenVPN

Post date: December 13, 2005, 18:12 Category: Network Views: 8500 Comments
Tutorial quote: You know how insecure 802.11x wireless networks are. In this article we'll create an OpenBSD-based secure wireless access point that prevents unauthorized access and encrypts every packet using a VPN tunnel. OpenBSD is one of the most secure operating systems available, is easy to use, and includes almost everything you need for this project in the base installation.
Unix+clones

Create Incremental Snapshot-style Backups With rSync And SSH

Post date: August 29, 2006, 16:08 Category: Network Views: 3579 Comments
Tutorial quote: As neither human nor computers are perfect (humans err / computers may fail) it is quite obvious that a good backup system will prevent from too much damage once the computer may go down. This could be either because the harddrive is failing or because of hackers or because you accidentally deleted something important.

In this tutorial I will show you how to automate backups automatically in an incremental snapshot-style way by using rSync.
Linux

Connecting to a Wireless LAN with Linux, Part 2

Post date: April 13, 2005, 19:04 Category: Hardware Views: 4065 Comments
Tutorial quote: In Part 1 we reviewed hardware options, which wireless utilities should be present, how to use Windows drivers, and how to be open to connect to any available wireless access point. Today we'll cover configurations on Red Hat- and Debian-type systems, basic security, and hardware discovery.

Wireless connectivity can be rather overly friendly, allowing connections from anyone. This howto assumes you have a wireless access point on a LAN, which can be all wireless or mixed wired and wireless. You don't want it wide open to just any random person with a desire to snoop on your network or "borrow" your bandwidth, but you want some access controls and security. Your access point should have a unique SSID (service set identifier), WEP (wireless equivalent privacy) or WPA/WPA2 (Wi-fi protected access) set up and working, and either a DHCP server or a pool of assigned IP addresses for clients.
Linux

Using iptables to rate-limit incoming connections

Post date: December 16, 2005, 22:12 Category: Network Views: 3790 Comments
Tutorial quote: There are times when you have to allow arbitary incoming connections, when you are travelling for example.

In these situations you can open up your system to allow incoming connections and be the target of a dictionary attack - literally a machine trying to connect and login over and over again using usernames and passwords from a dictionary.

In this situation you can create a collection of firewalling rules which will deny access from remote clients who attempt to connect "too many" times.
Fedora

Installing MyDNS & MyDNSConfig 3 On Fedora 10

Post date: May 24, 2009, 11:05 Category: Miscellaneous Views: 3856 Comments
Tutorial quote: In this tutorial I will describe how to install and configure MyDNS and MyDNSConfig 3 on Fedora 10. MyDNS is a DNS server that uses a MySQL database as backend instead of configuration files like, for example, Bind or djbdns. MyDNSConfig is an easy to use web-based interface to MyDNS. MyDNSConfig can create all types of DNS records that are available in MyDNS and adds features like user management and access privileges.
Unix+clones

Cacti installation

Post date: November 8, 2006, 05:11 Category: Network Views: 11408 Comments
Tutorial quote: Cacti is a complete frontend to RRDTool, it stores all of the necessary information to create graphs and populate them with data in a MySQL database. The frontend is completely PHP driven. Along with being able to maintain Graphs, Data Sources, and Round Robin Archives in a database, cacti handles the data gathering. There is also SNMP support for those used to creating traffic graphs with MRTG.
Debian

Scheduled Backups With Rsyncbackup On Debian Etch

Post date: April 13, 2008, 12:04 Category: Miscellaneous Views: 3562 Comments
Tutorial quote: This document describes how to set up and configure rsyncbackup on Debian Etch. Rsyncbackup is a Perl script that cooperates with rsync. It is easy to configure and able to create scheduled backups (partial and incremental backups).
Ubuntu

Stealth Checking Xbox 360 Games With abgx360 and Nautilus

Post date: June 29, 2009, 09:06 Category: Software Views: 11359 Comments
Tutorial quote: If you’re like me, you’ve jumped through a million hoops to get abgx360gui working. But you can only get the command line interface working. No problem, we’ll create a script for Nautilus to easily launch abgx360 to check your Xbox 360 games.

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