Internet Secuirty – AgileOps https://agileops.co.uk Virtualization made simple for Everyone. Thu, 23 Apr 2020 18:09:23 +0000 en-US hourly 1 https://wordpress.org/?v=6.5.8 https://agileops.co.uk/wp-content/uploads/2017/10/favicon-01-50x50.png Internet Secuirty – AgileOps https://agileops.co.uk 32 32 194680508 Consolidating IT Infrastructure by Virtualization https://agileops.co.uk/virtualization/ https://agileops.co.uk/virtualization/#respond Tue, 12 Jun 2012 05:02:48 +0000 https://quraishi.wordpress.com/?p=422 ]]>

  • Hypervisor contains the Virtual Machine Monitor (VMM)
  • Guest OS unchanged, Host can be any kind of hardware
  • Guest uses generic device drivers

Hardware Virtualization (a.k.a. Hardware Assisted)

  • VMM moved to hardware
  • Requires VT hardware
  • Guest OS unchanged, uses generic device drivers

Paravirtualization

  • Guest OS requires paravirtualized drivers
  • Thin layer for hypervisor, guest has access to Host hardware
  • Host any kind of hardware

in gernal we have two famous methods of Virtualizaiton : Hosted Virtualization ( installing the virtualization software VMM on a host server ie. Windows Server 2008 or Linux etc. Bare Metal Virtualization ( installing the virtualization software on physical machine directly which gives super performance eg. VMware vSphear) aka Hardware emulation Further we can classify the virtualization in three important categories Storage Virtualization: This is achieved by consolidating all the storage in a single location which makes the network admins to easily manage the storage resource. Network Virtualization This is accomplished by combining all the network bandwidth and then splitting it into channels for users. this allows the Administrator allow resources as and when they require. This allows each user to access all of the network resources, which can be files and folders on the computer, printers or hard drives etc. This streamlined approach makes the life of the network administrator much easier. Server Virtualization This is the most popular virtualization method used today to consolidate multiple virtual machines on a single high spec physical server, This will save processing power , space in DC and more importantly cost.

 

 

 

 

 

 

 

 

  1.  Virtualization of old physical servers to a virtual server  also known as P2V (Physical to Virtual)
  2. Setup new servers only on virtual infrastructure (unless there is a mandatory requirement of having a physical server )

Although there are a lot of products available in the market to achieve this the ones that are hugely popular is VMware and Hyper –V. both of the software does the job although there is always a big debate on which is better one. I have always been a big supporter of VMware products, with their new range of products complementing one and other. I will dig these two deeper on my next post … Thanks for reading.

Sources : VMware: https://www.vmware.com/files/pdf/VMware_paravirtualization.pdf

Dell: https://www.dell.com/downloads/global/power/ps3q05-20050191-Abels.pdf

Microsoft: https://www.microsoft.com/en-us/server-cloud/hyper-v-server/benefits.aspx]]>

]]> https://agileops.co.uk/virtualization/feed/ 0 422 Are you Secure when you browse the web ? https://agileops.co.uk/are-you-secure-when-you-browse-the-web/ https://agileops.co.uk/are-you-secure-when-you-browse-the-web/#comments Thu, 11 Nov 2010 01:26:51 +0000 https://quraishi.wordpress.com/?p=373 ]]> Eventually someone else started using their network; they only realized this after they felt that their connection became slow. This could have been worst as people can capture all the packets and get the critical information like online banking information, CC numbers etc. The truth is even if your using secure Wi-Fi connection, wireless technology can still be very easy to compromised, how ? Check out for yourself Googleit  –  how to crack Wi-Fi network and you will get the answer. However we can avoid this just by making sure we do not use simple name or dictionary words as a passphrase. Always use complex passphrase /WEP/WPA2 keys and make sure you have a key which is at least 10 to 12 characters long. Now let’s get to the point How to secure Your wireless network ? Change Your network name and  Your router login information Simple job just login to the router using the details from Manufacture. Usually found at the back on the router long and change the Name of the network and login information or at least the password. Secure Your Wi-Fi network: If you do not secure your network it will be open for anyone who can get your wireless signal. WEP (Wire Enabled Protection) this should only be used if you have old laptop that does not support the advanced encryption. If you are using this make sure you use 128 bit encryption. WPA 2 encryption is the best so far, However I suggest you keep a long passphrase and complex at the same time. Hide Your network name (SSID) Although most people don’t do this, but I strongly suggest you to hide the SSID. Simple logic if they can’t find your Wi-Fi signal  you will be less vulnerable to get hacked. Enable Software and Hardware Firewall: Let me explain Software firewall is the firewall built into the Operating System i.e., Windows Vista or Windows 7 just enable it. Hardware firewall  ah might be new to some of us,  but most of the routers built today even the cheapest one has a firewall program built into them.  So all you got to do is login to the router using your admin login and enable it. Hope you find this post useful feel free to comment if you ever used open / un-secure Wi=Fi.]]>

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