Objective

Obtaining a working LEMP stack (Linux, nginx, mariadb, php) on Debian 9 Stretch

Operating System and Software Versions

• Operating System: – Debian 9 Stretch

Requirements

Root access on a working Debian 9 Stretch installation

Difficulty

EASY

Conventions

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Gorilla Password safe application is not part of CentOS/Redhat 7 package repository and thus it needs to be installed manually on your Linux system. First, let’s take care of the prerequisites. Here we assume that you have already enabled EPEL repository:

# yum install tcllib tk itcl git

In the next step we are going to clone a current Gorilla Password repository using git command:

$ cd /tmp/
$ git clone https://github.com/zdia/gorilla.git

Once we get Gorilla Password sources cloned locally we can copy them into a designated directory/opt:

# cp -r gorilla/sources/ /opt/gorilla

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Objective

The objective is to configure network Redhat package repository accessible via HTTP protocol. This guide uses Apache webserver as a means to provide HTTP access to the local package repository.

Operating System and Software Versions

• Operating System: – Red Hat Enterprise Linux Server 7.3 (Maipo)
• Software: – Apache/2.4.6 (Red Hat Enterprise Linux)

Requirements

Privileged access to your RHEL server system will be required.

Difficulty

EASY

Conventions

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Introduction

Hashcat is a robust password cracking tool that can help you recover lost passwords, audit password security, benchmark, or just figure out what data is stored in a hash.

There are a number of great password cracking utilities out there, but Hashcat is known for being efficient, powerful, and full featured. Hashcat makes use of GPUs to accelerate hash cracking. GPUs are much better and handling cryptographic work than CPUs are, and they can be utilized in much greater numbers than CPUs. Hashcat also supports a very wide range of popular hashes, to ensure that it can handle deciphering nearly any password.

Please note that misuse of this program can be illegal. Only test on systems that you own or have written permission to test on. Don’t share or post hashes or results publicly. Hashcat should be used for password recovery and professional security audits.

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Introduction

Asciinema is a lightweight and very efficient alternative to a Script terminal session recorder. It allows you to record, replay and share your JSON formatted terminal session recordings.
The main advantage in comparison to desktop recorders such as Recordmydesktop, Simplescreenrecorder, Vokoscreen or Kazam is that Asciinema records all standard terminal input, output and error as a
plain ASCII text with ANSI escape code .

As a result, JSON format file is minuscule in size even for a longer terminal session. Furthermore, JSON format gives the user the ability to share the Asciinema JSON output file via simple file
transfer, on the public website as part of embedded HTML code or share it on Asciinema.org using asciinema account. Lastly, in case that you have made some mistake during your terminal session, your
recorded terminal session can be retrospectively edited using any text editor, that is if you know your way around ANSI escape code syntax.

Difficulty

EASY

Conventions

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AUTHOR: Tobin Harding

Production C code should always check the return value of library
calls for errors. However, these checks often require writing the same
code repeatedly. There are a number of solutions to this problem, of
which this is just one.

For example

int foo (char *s)
{
	char *buf;

	if ( (buf = malloc(strlen(s) + 1)) == NULL)
	   /* error */
	...
}

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About

The automated build docker WordPress blogging tool and a content management system (CMS) image “linuxconfig/wordpress” can be used to instantly deploy wordpress CMS on your docker hosts.

Configuration

The wordpress CMS application runs on Debian GNU/Linux system featuring Apache web server, MariaDB ( MySQL ), database and PHP5. A new docker container based on “linuxconfig/wordpress” will expose port 80 which can be linked to the docker host port for an immediate WordPress web site access.

Configured MySQL users:passwords:

• root:”empty password”
• admin:”pass”

Configured MySQL databases:

• wordpress

Exposed ports:

• 80

Deployment

Below command will download and create a new docker container called wordpress and link local host system port 80 with container’s exposed port 80.

# docker run -d --name=wordpress -p 80:80 linuxconfig/wordpress

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About

The automated build docker Drupal content management framework image “linuxconfig/drupal” can be used to instantly deploy Drupal on your docker hosts.

Configuration

The Drupal application runs on Debian GNU/Linux system featuring Apache web server, MariaDB ( MySQL ), database and PHP5. A new docker container based on “linuxconfig/drupal” will expose port 80 which can be linked to the docker host port for an immediate Drupal blog access.

Configured MySQL users:passwords:

• root:”empty password”
• admin:”pass”

Configured MySQL databases:

• drupal

Exposed ports:

• 80

Deployment

The below command will download and create a new docker container called drupal and link local host system port 80 with container’s exposed port 80.

# docker run -d --name=drupal -p 80:80 linuxconfig/drupal

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