July 1, 2009
Secure Sockets Layer (SSL) virtual private networks (VPN) provide secure remote access to an organization’s resources.
A VPN is a virtual network, built on top of existing physical networks, that can provide a secure communications mechanism for data and other information transmitted between two endpoints. Because a VPN can be used over existing networks such as [...]
June 25, 2009
A successful SSL VPN deployment can be achieved by following a clear, step-by-step planning and implementation process. The use of a phased approach can minimize unforeseen issues and identify potential pitfalls early in the process. The 5 phases of the recommended approach are as follows:
1. Identify Requirements. Identify the requirements for remote access and determine [...]
June 24, 2009
The TCP/IP protocol is widely used throughout the world to provide network communications. The TCP/IP model is composed of the following four layers, each having its own security controls that provide different types of protection: Application, Transport, Network, and Data Link.
Application layer, which sends and receives data for particular applications. Separate controls must be established [...]
It is important to understand that VPNs do not remove all risk from networking. While VPNs can greatly reduce risk, particularly for communications that occur over public networks, they cannot eliminate all risk for such communications. One potential problem is the strength of the implementation. For example, flaws in an encryption algorithm or the software [...]
A VPN is a virtual network, built on top of existing physical networks, that can provide a secure communications mechanism for data and other information transmitted between networks. Because a VPN can be used over existing networks, such as the Internet, it can facilitate the secure transfer of sensitive data across public networks. This is [...]
This type of SSL VPN allows a user to use a typical Web browser to securely access multiple network services, including applications and protocols that are not web-based, through a tunnel that is running under SSL. SSL tunnel VPNs require that the Web browser be able to handle active content, which allows them to provide [...]
May 4, 2009
Network bandwidth is one of the most important areas of consideration with VDI. Network bandwidth requirements are typically limited to carrying keystrokes and mouse movements to the server and returning screen refreshes to the endpoint. Multiply this keystroke/mouse bandwidth times hundreds or thousands of virtual desktops; the network bandwidth is heavily utilized, even when no application [...]
April 20, 2009
As businesses tighten their belts in response to the recession, organizations are identifying what network platforms need additional functionality as cheaply as possible. Increasingly, they’re opting for risk-free used networking equipment as part of extending the life span of their network. Used solutions are a viable financial solution because used equipment is cheaper and easier to deploy than going through a lengthy [...]
April 17, 2009
Here are some of the pros of deploying desktop virtualization:
Desktop virtualization, a.k.a. virtual desktop infrastructure (VDI), is based on thin-client computing. The virtual desktop machine on the server side handles all tasks related to the OS, application processing and storage. Thin-client endpoints typically use some local software (basic OS to boot the endpoint and connect [...]
February 9, 2009
Many organizations have launched virtualization strategies to consolidate servers, reduce energy consumption in the data center, increase business agility and reduce costs. But there is life for virtualization beyond the server. Now virtualization is moving into the realm of desktop and mobile computing. As businesses look to make further cuts in IT Infrastructure expenses, many [...]
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