KRACK – Key Reinstallation Attacks on WPA2 Protocol

Introduction

KRACK is a security flaw with WPA2  security and it allows to  compromise wireless WPA security  by forcing nonce reuse .

This is not an issue related to passwords but the protocol used by WPA and impacts pretty much all devices which uses wi-fi connection like phone, computers, wi-fi routers are impacted.

Red Hat 7.x Installation : Step by Step Guide

Installation and Configuration of RHEL 7.x
Learn about Installation and initial configuration of Red Hat Enterprise Linux, RHEL 7.3
For this Linux step by step installation guide we will use RHEL 7.3  64Bit iso image, the installation procedure is same for all RHEL 7.x releases in case you want to use a different RHEL version to install.

Here are the 10 Steps to Install RHEL 7.x distribution.

Linux PIE/stack corruption (CVE-2017-1000253) Bug and Security Vulnerability

About CVE-2017-1000253 Bug:

This issue is related to the Linux kernel loaded Executable and Linkable Format (ELF) executables. If an ELF application was built as Position Independent Executable (PIE), the loader can allow part of that application’s data segment to map over the memory area reserved for its stack.
It  can cause memory corruption and may allow an unprivileged local user to gain privileged access using Set owner User ID (SUID) or privileged flawed PIE binary.

Ideas for Choosing the Perfect Writer’s Laptop

In the modern era, a computer – especially laptop – is the essential tool for aspiring writers. Indeed,writer with pen you probably don’t lay your hands on a typewriter anymore unless you are a very old school person. The modern laptops are much better tools for those who have something to say and want to put in on paper or Internet. Me, being some kind of a writer as well, have been using ASUS ZenBook for a couple of years. It is a good writer’s notebook however not the only successful choice. In this article, I will point out some things important for a writer on a laptop hunt.

How to Build a Winning Business Model in Enterprise Mobility

Strategy, business models, and tactics are often used interchangeably but they differ slightly in their actual meaning. Business model is the means of identifying a solution’s key offerings that will make customers pay for the product/service.

Business model is defined at the outset, when the enterprise mobility solutions are discussing a potential application idea. It is crucial to get all aspects of the business model right, and the ambiguities (if any) listed and categorized as ‘needed to be addressed before development’ or ‘can be expounded on later’.

chmod Quick Referance with Examples

What is chmod ?

chmod ( Change Mode ) is a command line utility in Unix , Linux and other Unix like systems to change the read, write, execute permissions of a file for owner , group and others.

How to use chmod?

Chmod command is used in two ways :
1. Using octal value & position : Sets the permission for owner, group and others with octal values , 4 for read , 2 for write , 1 for execute and any sum of these number to get cumulative permissions.

SHA-1 Collision – Insecurity of SHA-1 exposed by Google

SHA-1 is widely used in applications like SSL, SSH, TLS, IPsec PGP, S/MIME to protect the sensitive information.

Google has demonstrated that SHA-1 Collision is possible and two files can have the same SHA-1 hash. This means that system can be manipulated by presenting it with manipulated data with same hash as good data.

man command in Linux and Unix

man command, short for manual, provides help for the commands, utilities or function in Linux and Unix systems. Learn about usage , related packages, sections and other interesting facts about man pages.

Submit Guest Posts

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If you are a tech blogger or a technical professional  wishing to share your experience and knowledge with others you can contribute to adminschoice.com and establish yourself as technical expert in your field.

Solaris 11 & Solaris 10 Certification

Learn about the Solaris 10 & 11 certification , price, number of questoons , duration and direct links to official site for exam 1z0-876, 1z0-821 and more.