GNS3 Virtualbox Connect VM with Gns3 1.4 or 1.3

GNS3 Virtualbox : How to use Virtual Box Virtual Machine in GNS3 as Virtual Host

This article is about Gns3 Virtualbox and I will show you how to connect virtualbox with gns3. Virtualbox is free software used for creating virtual machine. Now what is a virtual machine? A Virtual machine is virtual operating system that can be run within your operating systems. For example you are running windows 10 on your computer. with the virtualbox you can install windows 8 virtually. In this way you can run the windows 10 and windows 8 at a time under the same computer. You can run multiple VM on single computer, multiple VMs can be used on single computer for following purposes:

  • You can create different networking labs.
  • If you can have a powerful server, with multiple VMs you can install different application server on same server which is very economical.
  • It can be used for practice, suppose you have windows OS and with virtualbox you can install Linux OS on your computer virtually.

In GNS3 you can connect PC to your networking devices with following ways:

Advantage of using virtualbox VM over other options is that you have the real real PC with OS of your choice with full control. Which is much more comfortable for some people. Following are the steps for connecting virtualbox with GNS3:

  1. Create a Virtual Machine with Virtualbox

For connecting GNS3 with virtualbox first you have a VM, so first create a virtual machine. If you don’t have any idea of creating virtual machine following video is very helpful for you:

Once VM is created it will appears in list of OS of your virtualbox.

VMs in virtualbox

  1. Now open the GNS3 and click on Edit\Preferencesand then from VirtualBox VMsmenu clicking on new button for creating virtual host in gns3.gns3 VM setting
  2. Select your VM from list, in my case it is windows 8 which I have create with above define process.Select VM from gns3
  3. Now finish the wizard a new VM will appear in GNS3 virtual PCs list as shown in figure. Insert the win 10 and router on gns3-Dashboard and connect the virtual machine with that 10 host on gns3
  1. For customizing the NIC of virtual host, start your VM, now for configuring IP address. Open network and sharing center and from adapter setting assign the IP address and gateway to your VM. In order to communicate it with your router you must have to assign the IP to both devices from same subnet. For example I have assigned the and with subnet mask host network adapter setting

LAN IP address

For assigning the IP address to router use the following commands



config t

Interface e0 (select the interface which is connected to your VM)

ip address

no shut

For testing and verification connection you can ping your router from your VM command prompt, for this go to VM and type the cmd in Run and ping your router IP.

Cloud Vs FTP | Difference between FTP server and cloud computing

What is Difference between FTP and Cloud?

Cloud or cloud computing is a general term used for different services services, like networking, storage, software applications etc.which are hosted on the internet and It allows us the ability to access different services on the Internet with web browser or with some software application without having to store any data on local system.

Cloud vs FTP difference


What is FTP?

FTP is stands for File Transfer Protocol, a standard protocol used for transferring files over the internet, It is used for upload and for download files from a central location. FTP can be consider as an integral part of cloud computing services because many cloud service providers also offers storage services which is like a FTP server where you can upload and download files from any where. 

For example, you can transfer files from online storage to a computer or host, share a file, or you can use it for remote access to files hosted on your FTP server.

Difference: FTP Vs Cloud in terms of Features


FTP Cloud
For FTP you normally need a FTP client for accessing files and folders. You can access your file on cloud with any web browser, you can also use application for accessing file on cloud
Ease & Use of Transfer Cloud have same features like Remote Access to Files
Normally with FTP you can capture the advance statistics Cloud may have Tracking and Reporting Ability
FTP server have less cost as compare to cloud Cloud services are may have more cost but also have some advance features as well.
Cloud computing consider more secure as compare to FTP, IN FTP communication are normally in plain text. On the other hand Cloud providers also provide you some more security features like backups..
FTP normally use port 21 for communication There are mot specific port for cloud computing
Example of FTP:Transmit, CODA, Krusader, , Default ubuntu ftp client, Total Commander, Windows default FTP client, Captain FTP, Filezylla, Cyberduck Cloud Computing Example:Google Drive, Amazon Cloud Drive Desktop [PC], Drop box, EMC Atmos, microsoft azure, MobileMe, Microsoft SkyDrive, Azure Blog Storage, Microsoft SharePoint, Office365, iKeepinCloud, CloudMe, ZOho cloud


Cisco ASA on Gns3 1.3.11 | Solution for ASA Flash issue

How to add ASA 8.4.2 in GNS3 on Window 7 or 8.1:

This is working processor of Cisco ASA on Gns3 1.3.0. You can easily configure your ASA firewall on GNS3. You need the following two ASA image files:

asa842-initrd.gz and asa842-vmlinuz ( these are ASA image files for gns3 )

you can download these file easily from internet. Once you have these two file follow these steps:

Open Gns3 and go to Edit \ Preferences \  Qemu \ Qemu VMS and click the New.

Add ASA on GNS3 1.3

Select the ASA 8.4-2 from drop down menu and type the name in next step.

Select ASA from menu

Set the RAM for your ASA

RAM for ASA in gns3

Locate the ASA files (i.e. asa842-initrd.gz & asa842-vmlinuz) and click on finish.

Now click on Edit and go to advanced setting tab and set the following value for respective parameter:

Qemu Options= -vnc none -vga none -m 1024 -icount auto -hdachs 980,16,32

Kernel cmd line= -append ide_generic.probe_mask=0x01 ide_core.chs=0.0:980,16,32 auto nousb console=ttyS0,9600 bigphysarea=65536

Locate two ASA file for gns3

Leave all the other options or setting to default and click the Save button then click OK button.

How to add Flash for ASA 8.4.2 in GNs3:

Open the command prompt, type the cmd in Run and press enter. Type the following commands for creation of FLASH for your ASA.

cd c:/

cd “Program files”

cd gns3

cd qemu-2.4.0

qemu-img.exe create FLASH 256

Press enter, you can review following image in case of any confusion. It may some take some time while creating the flash on last command so be patient 🙂

Create flash for ASA in  gns3

Please note that I am using the windows 7 enterprise 32 bit edition and GNS3 is installed at directory C:\Program Files\GNS3\. You can made changes to above command according to your installed path. But if you have the same OS and same installation directory you can use the above command prompt commands.

How to use ASA in GNS3:

Once you have completed all the above steps you will find the ASA in your GNS3 security devices.

ASA lab gns3

You can drag this ASA to your GNS3 topology. Start you ASA, once it is start used the enable command for entering into enable mode.  It will ask for password, these is no password set on it therefore simply press enter. Since you have created the flash for this ASA therefore you can also save your running configuration to start up configuration. In case of any issue please comment on this post, also if you have some suggestion for improving this article your comments are also welcome. Thank your time and enjoy ASA on Gns3…!

Latest Cisco 3745 IOS image For Gns3

Working 3745 IOS download for Gns3

What is IOS image? 

IOS image is software or Operating System used in most Cisco routers and  switches. IOS image support different packages like routing, switching and inter-networking etc. You can use these IOS images with GNS3. Gns3 is one of the famous network simulator and its hot feature is that it can run the real Cisco IOS image, as compare to other network simulator like packet-tracer which perform all functions base on programming. If you are beginner then learn more here: how to use or configure GNS3

Remember only the c7200 series ios images get newer IOS images.  According to Cisco all other platforms are now “end of life”, but you can used these older ios images as well with Gns3.

Gns3 3745 IOS image Details

Cisco 3700 Series are the multi-service routers provide LAN/WAN connectivity, new high-density service modules, and support for multiple advanced integration modules. You can use NM-16ESW module with this 3745 IOS, which will enable the switching functionality in GNS3. In this way you will be able to perform different switching labs with GNS3 like Vlans, inter-vlan (Router on stick), VTP (vlan trunking protocol), different multi-layer functionality etc. learn more about Layer 3 Switching vs Routing

cisco 3745 image

From here you can download Cisco 3745 IOS image for your GNS3 and perform different GNS3 labs with this IOS. Remember this IOS is only for informational, practice purposes and for GNS3 used. If you need the IOS for your real hardware then it is better to Contact Cisco for latest and best IOS for your device. Following is the details  and recommended setting of  Gns3 3745 IOS image for your GNS3 setup. This Image was tested with Gns3 1.1 and i hope this will also work fine with the latest GNS3 version as well.

IOS version =12.4.25d (Mainline)

File name: c3745-adventerprisek9-mz.124-25d.bin

Minimum RAM: 128 but alteast 256MB recommended

Best idle-PC value: 0x60aa1da0 , you can set other idle PC value as well

Here is the link from where you can download IOS for your Gns3

Download Cisco 3745 image for Gns3

Run ASA 8.4.2 on GNS3

Other IOS image on this Website:

Download 1700c IOS for GNS3 Router

Free Windows 7 virtual desktop management tools list | WindowsPager

How to create Multiple Desktop on Windows operating systems:

There are many virtual desktop management tools are available on the Linux platform. However, it is strange that Microsoft did not launch this kind of tool for their Windows systems. For IT professionals, since at the same time using a variety of different applications are so common, so an excellent virtual desktop management tools definitely be a big help. In this article I will discuss windows 7 virtual desktop tool i.e.WindowsPager.

multiple desktop with WindowsPager

How to use WindowsPager

WindowsPager is a free virtual desktop management tools. While this can only be regarded as a basic tool, but all the key functions are still available. The most important, it’s running state is very stable as compare to with some other fancy management tools. WindowsPager does not provide a graphical user interface settings, this is what makes its small size. You can set the number of Virtual desktops and you can also set some shortcut keys to quickly switch between the various desktops. Of course, different settings for different desktop wallpapers also feasible.

We can right-click on an application’s title bar and select the corresponding option to move applications from one desktop to move to another desktop. By title bar, you can also be a window to be displayed simultaneously on all desktops. It also which applications or application window can be specified to be ignored as WindowsPager.

windowspager desktop options

Some applications take advantage of the virtual desktop management tools for processing may be wrong. The easiest way to deal with the virtual desktop is the taskbar icon context menu added to the ignore list. This operation will allow us to directly select the corresponding application from the desktop.

Top Windows 7 virtual desktop tools list:

I have tried another free desktop management tool that is Finestra Virtual Desktops . It is more powerful in terms of functionality than WindowsPager but on Windows 7 64-bit version. Some other handy virtual desktop management tools are listed below:

  • Dexpot
  • Gnome Workspaces
  • Virtual Dimension
  • Sysinternals Desktops
  • nSpaces
  • mDesktop
  • Xilisoft Multiple Desktops