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VirtualWiFi (previously known as MultiNet) is a virtualization architecture for wireless LAN (WLAN) cards that abstracts a single WLAN card to appear as multiple virtual WLAN cards to the user. The user can then configure each virtual card to connect to a different wireless network. VirtualWiFi allows a user to simultaneously connect his machine to multiple wireless networks using just one WLAN card.

This new functionality introduced by VirtualWiFi enables many new applications, which were not possible earlier using a single WLAN card. It interacts with the wireless card device driver at the lower end, and network protocols at the upper end. The buffering protocol is implemented in the kernel, while the switching logic is implemented as a user-level service. Virtual WiFi uses a network hopping scheme to switch the wireless card across the desired wireless networks. Switching between networks is transparent to the applications, such that the user feels she is connected to multiple wireless networks simultaneously. VirtualWiFi also provides users with a command-line interface to dynamically add and remove connectivity to a network.

With VirtualWiFi:

• You can connect to a guest’s machine or play games over an ad hoc network, while surfing the web via an infrastructure network.
• You can use VirtualWiFi to connect your ad hoc network, which may contain many nodes, to the Internet using only one node.
• VirtualWiFi can help make your home infrastructure network elastic by extending its access to nodes that are out of range of your home WiFi Access Point.

To download VirtualWiFi for Windows XP, click here. For more on how to use VirtualWiFi, visit the VirtualWiFi usage page.

Via [TechdotBlog]