Repair Kali Linux grub after installing Windows in Dual boot System

If your System has primary OS Windows then you install your secondary OS Kali Linux. That will be ok, Kali Linux put boot entry of Window automatically for you. At initial boot menu you can see both OS entry to boot their those OS individually.

May be your window is corrupt in dual boot system or you want to install window as secondary OS after installing Kali Linux as primary OS. You may face corrupt boot-loader menu. You not able to boot Kali Linux any more because Window didn’t put entry of Kali Linux automatically in their boot menu.

So this post motive is to help those guys which are facing those problems subjecting to corrupt Boot-loader. There are mainly two methods:

1. Repair Grub via Kali Linux live USB.

2. Repair Grub Via Boot-rapair-disk.

How to share files between Host and Guest in Virtual Box

With the “shared folders” feature of Virtual Box, you can access files of your host system from within the guest system. This is similar how you would use network shares in Windows networks — except that shared folders do not need require networking, only the Guest Additions. Shared Folders are supported with Windows (2000 or newer), Linux and Solaris guests.

Shared folders must physically reside on the host and are then shared with the guest, which uses a special file system driver in the Guest Addition to talk to the host.

To share a host folder with a virtual machine in Virtual Box, you must specify the path of that folder and choose for it a “share name” that the guest can use to access it. Hence, first create the shared folder on the host; then, within the guest, connect to it.

Install Ubuntu on Virtual Box

If you want to experiment Linux, learn this thing you never had before then you must try to install Linux first on virtual box rather then installing on your Hard disk permanently. On doing experiment Linux may crash, to prevent this you can install Linux on Virtual Machine. After crashing you can install again and do your process again. That was the most good things for Virtual Machine. You don’t need to make partition or back up data as you need in hard disk installation.

Install Kali linux on Virtual Box.

If you want to experiment Linux, learn this thing you never had before then you must try to install Linux first on virtual box rather then installing on your Hard disk permanently. On doing experiment Linux may crash, to prevent this you can install Linux on Virtual Machine. After crashing you can install again and do your process again. That was the most good things for Virtual Machine. You don’t need to make partition or back up data as you need in hard disk installation.

TCP and UDP, and Difference between them.

Both TCP (Transmission Control Protocol) and UDP (User Datagram Protocol) are transport layer protocols of OSI Model. TCP and UDP both handle data communication on IP network (Internet). Both have same purpose but actions for doing the task is different. In this article we will explain about TCP and UDP and their differences.

How to Install Ubuntu ?

In this article I will guide you how to install Ubuntu linux on your system. There are three methods to install Ubuntu. This are…

• Via CD-DVD
• Via bootable USB
• Via Virtual Machine

Make a bootable USB to install linux

In this article I will guide you how to make a bootable USB to install linux in your system. This is the best and more easiest way to install linux. By this method you can install variety of linux like ubuntu, fedora, kali linux, arch linux and linuxmint etc.

Simple Mail Transfer Protocol (SMTP)

What is SMTP?

Simple mail transfer protocol (SMTP) is TCP/IP application layer protocol using TCP port 25. It is used to sending and receiving e-mail over the Internet to another SMTP server. But SMTP has limitation in ability to queuing the messages at receiving end, so POP or IMAP are used. Generally SMTP is used for sending the e-mails and POP or IMAP for receiving the e-mails.

What is TCP/IP and its difference with OSI Model

Transmission control protocol / Internetworking Protocol (TCP/IP) that define how all transmission are exchanged across the internet. This project is established by Advanced Research Project Agency (ARPA) in 1960. Before it was a known as (ARPANET) Arpa-netwrok. ARPANET developed and called TCP/IP. TCP/IP developed before OSI reference Model. It is also called DOD Model (Department of Defence ).

How to install Kali Linux ?

From the creators of BackTrack comes Kali Linux, the most advanced and versatile penetration testing distribution ever created. And have a whole set of amazing features lined up in security distribution, geared at streamlining the penetration testing experience. Widely used for pen-testing and hacking.