Access
.:: Remote Access to Business ApplicationsToday’s business environment requires mobile and remote access to critical business applications which are housed behind secured networks. Citrix has been a leader for years in this arena and continues to offer innovative solutions to securely web-enable critical business software. 
Specialty appliances also provide secure access to business applications using SSL protocol across the internet, allowing any place, any time access to business applications. The SSL/VPN provides streamlined remote access that is secure and quick to install..:: Wireless: Mixing Mobility With Connectivity
Wireless LANs enable users to establish and maintain a wireless network connection throughout or between buildings, without the limitations of wires or cables.
There are four wireless-networking standards available depending upon your requirements.
1. Wi-Fi (802.11b), or Wireless Fidelity which is also known as 802.11b is the corporate choice and has a suitably wide range for use in big office spaces. Wi-Fi (802.11b) is currently the most popular and least expensive wireless LAN specification. It operates in the 2.4GHz radio spectrum and can transmit data at speeds up to 11Mbps within a 30m range. It can affected by interference from mobile phones and Bluetooth devices which can reduce the transmission speeds. It is the standard fitment to many wireless laptops including the new Centrino based models.
2. 802.11a, has a couple of advantages over Wi-Fi. It runs at a less-populated frequency (5.15GHz to 5.35GHz) and is therefore less prone to interference. Its bandwidth is much higher, at a theoretical peak of 54Mbps. Even though actual throughput is closer to 22Mbps. Some manufacturers offer proprietary modes that can push throughput a little higher. Its main problem is its shorter range: 15m compared to Wi-Fi’s 30m, forcing you to buy more access points to ensure full coverage, it is also more expensive not compatible with Wi-Fi (802.11b). There are dual band cards and access points available from some manufactures that automatically switch between the two to maintain a connection.
3. 802.11g is the latest standard and promises to be the most popular format in the furture. It combines the speed the 802.11a with the backward compatibility of 802.11b. It has the same longer range of 802.11b but in the same way it can be affected by interference.
4. Bluetooth is a somewhat different standard from Wi-Fi or 802.11a, offering much more flexibility but on a smaller, ‘personal area network’ scale and primarily is being seen as a replacement for I.R (Infa Red) and wireless connection to Bluetooth enabled electronic devices. Its actual throughput is only 300Kbps, and its range around 10m. But unlike Wi-Fi and 802.11a/g, which require adapters, routers, gateways, access points and synchronised setup schemes to connect devices, any devices with a Bluetooth radio and antennae or Bluetooth enabled can speak to each other with little or no preparation.
