HYPERLEDGER FABRIC ON UBUNTU 18.04 LTS : INSTALLATION STEPS WITH TERMINAL COMMANDS

Hyperledger is an umbrella project of open source blockchains and related tools, started in December 2015 by the Linux Foundation, and has received contributions from IBM, Intel and SAP Ariba, to support the collaborative development of blockchain-based distributed ledgers.The following post ahead will see through the screenshots and steps for installation of Hyperledger Fabric on Ubuntu 18.04 LTS. The installation basically first creates the required environs and then the actual installation of.

The actual terminal history I got after the installation is placed below.Between 11-13 terminal commands,if you get an error,please reboot and proceed.

    1  sudo apt-get update
    2  sudo apt-get install curl
    3  sudo dpkg --configure -a - i ran this owing to an error in between
    4  sudo apt-get install curl
    5  sudo apt --fix-broken install - i ran this owing to an error in between
    6  sudo apt-get install curl
    7  sudo apt-get install npm
    8  sudo apt-get install docker
    9  curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
   10  sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"
   11  apt-cache policy docker-ce - might need a reboot if error seen
   12  sudo apt-get install -y docker-ce
   13  docker info
   14  sudo docker info
   15  sudo apt-get install -y docker-ce
   16  sudo apt-get install docker-compose
   17  sudo apt-get upgrade
   18  sudo curl -sSL https://goo.gl/6wtTN5 | sudo bash -s 1.1.0
   19  history
   20  sudo chmod 777 -R fabric-samples
   21  cd fabric-samples/first-network
   22  sudo ./byfn.sh generate
   23  sudo ./byfn.sh up


The following applications and software's need to be installed first for Hyperledger Fabric:

• CURL
• GO Programming Language
• Docker
• Docker Compose
• Node.js Runtime
• NPM
• PYTHON

The following is the set of commands used for the entire installation.These commands are followed by the respective screen shots of the executed commands.

So...all good and the fabric is installed...

Lure of a FREE PEN DRIVE : MALWARE'd

1.   If you are one of those guys who are regular to attend workshops, seminars, product launches , lectures...you must have got varying opportunities of getting hold of freebies in form of bags,brochures and PEN DRIVES....yess m sure the last one is a pure lure and most of the times everi one of us falls for it...be it a small capacity or a large capacity...the hand does not think twice before picking it up....but does any one of us realise that it may be these pen drives who become the first source of uploading some malware or a virus in your PC or laptop...the moment it is plugged in .....the machine is compromised.....unless the autorun is disabled...which in most of the cases is not.....

2.  The concept of zero day exploits has made it more dangerous....coz even if the user decides to run a antivirus scan...it will be shown free of any kind of virus or malware...the result is a silent compromise of the machine...however updated it remains in respect of OS or browsers or any application....the silent action in the background defies every lock of the user.Now all this is not based on some kind of imagination...there have been real life cases of which the one which made lots of noise is the IBM-AusCERT conference on the Gold Coast, Queensland, in which the free pendrives were infected by not one, but two pieces of malware.The details available at this link http://nakedsecurity.sophos.com/2010/05/21/ibm-distributes-usb-malware-cocktail-auscert-security-conference/

(CLICK ON THE IMAGE TO ENLARGE)

3.   In what must have been a highly embarrassing admission, IBM Australia sent an email to all AusCERT attendees warning them of the security screw-up...as shown in the screen shot above...besides this the famous stuxnet example was via pendrives lure....so if this is happening at such high levels of interactions,can the workshops u and me attend be left behind!!!!no way....so whats the way out?....best way is to buy one from a genuine store...(not sure how clean will that be?)...or still better refrain your self from picking one free pendrive.

ARACHNI Web Scanner

1.    When we start finding vulnerabilities in a web application,either we have a option to do it manually by putting in hours of patience and grilling or we generally hear the commonly used tools like Acunetix and few other online scanners...or for may be afford a luxury like IBM - Proventia Network Enterprise Scanner ..but there is an open source tool option to Acunetix. Takes lil bit of time but the amount of options that it offers are huge...and gives a great report that is exhaustive.

2. Arachni is an Open Source, feature-full, modular, high-performance Ruby framework aimed towards helping penetration testers and administrators evaluate the security of web applications. It is smart, it trains itself by learning from the HTTP responses it receives during the audit process and is able to perform meta-analysis using a number of factors in order to correctly assess the trustworthiness of results and intelligently identify false-positives. It is versatile enough to cover a great deal of use cases, ranging from a simple command line scanner utility, to a global high performance grid of scanners, to a Ruby library allowing for scripted audits, to a multi-user multi-scan web collaboration platform.

3.   Arachni is a fully automated system which tries to enforce the fire and forget principle. As soon as a scan is started it will not bother you for anything nor require further user interaction.Upon completion, you will be able to export the scan results to several different formats (HTML, Plain Text, XML, etc.).Few useful pointers about details of this good scanner : 

Download from         -  http://www.arachni-scanner.com/download/

Homepage                 - http://arachni-scanner.com

Blog                          - http://arachni-scanner.com/blog

Documentation          - https://github.com/Arachni/arachni/wiki

Support                     - http://support.arachni-scanner.com

GitHub page              - http://github.com/Arachni/arachni

Code Documentation - http://rubydoc.info/github/Arachni/arachni

Author                     - Tasos "Zapotek" Laskos (http://twitter.com/Zap0tek)

Twitter                    - http://twitter.com/ArachniScanner

4.    To use Arachni run the executables under "bin/".

To launch the Web interface:

   cd bin

   ./arachni_web in a separate terminal

and ./arachni_rpcd in a separate terminal

Default account details:

    Administrator:

        E-mail address: admin@admin.admin

        Password:       administrator

    User:

        E-mail address: user@user.user

        Password:       regular_user

5.    For a quick scan: via the command-line interface:

    bin/arachni http://test.com

6.     For detailed documentation see:        http://arachni-scanner.com/wiki/User-guide

IBM developing PCs that may run 30 times faster

1.   A one-atom-thick layer of carbon has currently become the focus of interest of IBM and the U.S. military to build computers that function at near the speed of light.

2.  The focus is actually based on GRAPHENE, the thinnest and toughest material ever produced, that conducts electricity, a breakthrough that opens the door to its use in digital electronics

3.   Some key finding on GRAPHINE :

- Graphene is the basic structural element of some carbon allotropes including graphite, charcoal, carbon nanotubes and fullerenes.

- Graphene conducts electricity 30 times faster than silicon -- approaching the speed of light

- Until recently, use of graphene was limited to development of more-efficient batteries and foldable touch screens.

- Nokia, the world’s largest maker of mobile phones by volume, is investigating the material’s potential use in cell phones, touch screens, and printed electronics. 

- Graphene’s flexibility and strength is astonishingly 300 times tougher than steel - may lead to the Nokia Morph, the first foldable phone.

- “With a graphene battery the same amount of weight and volume as a current one, you could drive 300 miles instead of 100,” said Yuegang Zhang, a principal investigator at the lab. 

- Graphene has the ideal properties to be an excellent component of integrated circuits. Graphene has a high carrier mobility, as well as low noise, allowing it to be used as the channel in a FET.

4.     Thanks Wiki and electroiq