The use of IPSEC transport mode for server to server communication is one of the best solutions to provide authentication, integrity, access control, and confidentiality. IPSEC is built into to the Linux kernel, in other words there is no daemon running in the background. IPSEC does not require port-forwarding; some people elect to use SSH,…
A chroot on Unix operating systems is an operation that changes the apparent root directory for the current running process and its children. A program that is run in such a modified environment cannot name (and therefore normally not access) files outside the designated directory tree. The term “chroot” may refer to the chroot(2) system…
LibreOffice 4 is launched and I was very exited to install it on my CentOS 6. It was really a good experience to install and use it. I am very happy to see that its performance is enhanced a lot. Documents are opening very fast than the earlier versions. I would like to share its…
PAM Radius Module allows any PAM-capable machine to become a RADIUS client for authentication and accounting requests. The actual authentication will be performed by a RADIUS server. The freeradius can be used for radius server. Download the PAM Radius Module To download the PAM Radius module, click here. Installing & configuring PAM Radius Module To…
There is a new Linux distribution released almost every week, sometimes, even every day. The latest is one called Stella, and the first version is Stella 6.3. Stella is a desktop-focused remix of CentOS, and Stella 6.3 is based on CentOS 6.3. If you are familiar with CentOS, you know that out of the box,…
We’ve seen this Ubuntu installer for Windows before, but now it has new features and a new name: Wubi Beta. It uses no confusing lingo, and even lets you choose a variety of options that similar applications don’t offer: Choose the drive to install Ubuntu (should have at least 10GB available) Choose how much room…
Openssl is one of the best tools which can be used to encrypt/decrypt files. You can password protect your important data to avoid misuse. To encrypt your files use the command: openssl des3 -salt -in $FILENAME -out ${FILENAME}.des3 To decrypt the file use the command: openssl des3 -d -salt -in ${FILENAME}.des3 -out ${FILENAME} You can…
This is actually, I want to share, how I learned the shell scripting. It may be helpful for beginners. I am writing it step by step so that it will easy to understand: STEP 1: Do your task manually & prepare the steps. If you know the basic Linux commands, it will help you to…
PAM Radius Module allows any PAM-capable machine to become a RADIUS client for authentication and accounting requests. The actual authentication will be performed by a RADIUS server. The freeradius can be used for radius server. Download the PAM Radius Module To download the PAM Radius module, click here. Installing & configuring PAM Radius Module To…
Configure Dropbear SSH server SSH server can’t work independently, it require SSH server (like dropbear) to run. Dropbear require libz & libcrypto to run, so please first install them (if not install already). To install the dropbear SSH server, follow the steps given below. -bash-3.2# tar –xvf dropbear-0.52.tar.bz2 -bash-3.2# cd dropbear-0.52 -bash-3.2# ./configure -bash-3.2# make…