Hacking DRBL Client PXE Boot Password

In a previous tutorial I showed installation of Clonezilla Server Edition on Ubuntu using my own Bash script. We configured PXE (Pre eXecution Environment)) password for clients so when the clients booted a password had to be entered to startup. This tutorial explains two different ways how to get and crack the PXE boot password.  Picture 1 […]
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Clonezilla Server Edition Installation on Ubuntu

The tutorial describes installation steps for Clonezilla Server Edition (SE) on Ubuntu 16.04.1 LTS using a Bash script. Clonezilla is OpenSource Cloning System (OCS) and it is a partition and disk imaging/cloning program . It helps you to do system deployment, bare metal backup and recovery. Two types of Clonezilla are available, Clonezilla live and Clonezilla SE (server edition). […]
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Using Rsync to Copy Files From SSH Server

Recently I have come through an interesting problem. I needed to download a raw copy of the HDD image located on a remote server (about 180GB) connected via 1 Mbps link. Network connection dropped frequently so the requirement was to reestablish connection automatically, without my intervention. Definition of Terms Server – a remote computer with an IP […]
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Quagga Routing Software with EIGRP Support

In May 2013, Cisco opened its proprietary EIGRP protocol and released an informational RFC 7868 – Cisco’s Enhanced Interior Gateway Routing Protocol (EIGRP). It gives other vendors an opportunity to implement EIGRP protocol into their devices. A group students led by an assistant professor and Cisco CCIE Peter Paluch who is an instructor trainer at the […]
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ZyNOS (ROM-0) Exploit

Recently, I came across the interesting article that nicely explained how to bypass authentication for some SoHO routers running ZyNOS proprietary operating system. Those routers allow to download the Romfile backup file rom-0 without any authentication. The rom-0 file can be decompressed by lzs compress and decompress tools  credentials displayed  using strings command. I decided to write Bash script […]
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Debian cannot mount USB external disks with NTFS file system automatically

After Debian Wheezy installation I noticed a strange problem that prevented USB disks with NTFS file system to be automatically mounted. USB sticks with FAT 32 file system were mounted correctly without any intervention. Using Google to find a solution I realized that other users experienced the same problem once they had installed Debian from USB stick. In fact, […]
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GNS3, Qemu, VirtualBox and Dynamips on Debian

GNS3 is based on Dynamips and Dynagen (a text-based front-end for Dynamips) to create a complete virtual Cisco network, adding many additional features and most importantly making it easy to create, change and save your network topologies. It also supports Qemu virtualizer/emulator and VirtualBox. The tutorial shows installation of Qemu and Dynamips on Debian from sources. […]
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Debian Wheezy Installation

After several years spent with Fedora I’ve decided to try another Linux distribution. My choice fell on Debian that I need to learn because of my work project. The tutorial describes installation of common user applications on Debian. It also offers solution to problems I encountered after Debian Wheezy installation. Please have in mind that is written […]
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Linux Core Installation Using Installation Script

A tutorial discuss Linux Core installation using an installation script that can be downloaded as an extension from Tinycore repository. Thanks to the script, installation is automated and easy thus much more preferable than manual installation. The installation steps provided below have been tested for both x86 and x86-64  Linux Core 6.x and and show step-by-step installation on Qemu virtual machine. […]
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