Enterprise Wireless Lan Solutions

Enterprise Wireless LAN Introduction:

The corporate computing is no longer desktops, and it is handheld all these desktops are replaced by the powerful tablet PCs, smartphones, Smart Apps and organizations devising policies on BYOD. It is essential to have a secured wireless infrastructure facility within the premises. The traditional argument of higher wire speed is fast losing ground with the arrival of 802.11 b/g/n  wireless technology standards like 802.11MIMO (multiple input and multiple outputs) at rates starts from 11Mbps to 154Mbps with full duplex. Now we are at 802.11ac technology standard which supporting 1.3Gbps of throughput off around 700Mbps, the security for the wireless network with the technologies like WAP (wireless protected access) standards and with RADIUS server integration. The adoption of Wireless LAN is very rapid; so many Organisations do look at Enterprise Wireless LAN as an effective way of Providing Mobility and Accessibility and organizations do consider Wireless LAN serving as a redundant connectivity.

The Benefits Wireless Network

Corporate companies can experience many benefits from a wireless network, including

Convenience: From any Wi-Fi hotspot you can access your network resources from any location within the wireless network coverage area.

Mobility: You and your employees can conduct or participate conference room meeting with the wireless connection.

Productivity: Wireless access to your company’s key applications and resources encourages collaboration between company and employees to get the job done.

Easy setup: no need of the string cables so installation is quick and cost effective.

Expandable: no need of additional equipment i.e we can expand the wireless networks with existing equipment.

Security: Advances in wireless technology provides robust security protections to the wireless network.

Cost: Because wireless networks eliminate or reduce wiring costs, labor cost hence organizations prefers wireless rather than the wired network.

What do we offer :

Vays infotech are well recognized as one of best the IT networking solution providers in Bangalore we offer the better wired and wireless network standard along with providing security to the wired and wireless network for your premises with recognized market leading wireless network devices. Vays infotech is well confident in delivering the client requirement with flexible cost. We can utilize the existing equipment effectively without incurring additional cost for the company. We are a well-trusted Company in Bangalore in providing Wireless Network like point to point solutions, point to multipoint solutions, network controller based Wi-Fi solutions, stand-alone routers and access points Wi-Fi Solutions. We manage your wireless network by creating centralized management. We protect your company’s data and network by providing well-recognized firewalls at a better price.

• Delivering the solution based on customer satisfaction
• We deliver single point service facilities for multi-vendor configuration\
• Overall solution to all IT network service needs
• We offer Hardware, software, up gradation, reinstallation, repairs, etc as per client requirement
• A clear focus on IT network service consultancy translating into highest level of customer satisfaction
• Quick response time
• Total customer satisfaction
• Single point service facility for multi-vendor configuration
• Overall solution to all service needs
• Hardware, software, up gradation, reinstallation, repairs, etc\
• A clear focus on service consultancy translating into highest level of customer satisfaction
• Faster response time
• High machine uptime
• Lower maintenance budget
• we are flexible to provide additional add-ons, peripherals, installation and upgrades, etc
• We recommend purchasing best performance products with relief from service considerations
• We provide Connectivity issues between multi-vendor systems, commissioning & maintenance of the heterogeneous networked environment.

Design, Plan and build Wireless Infrastructure for offices, Campus, and Factories

Different Facilities need different building blocks of Enterprise Wireless LAN. For example, the User and Device density in an office environment are higher compared to a Factory or any Manufacturing unit. The Enterprise Wireless LAN is a trade-off between Coverage and Speed. Optimally using the scarce resource of Frequency channels, Power Radiation and. or. Antenna Gain, one can get the desired results.

Building new unified wireless solutions facility for an office, campus and factories is not an easy job. It always requires best practices; you must assess your infrastructure RF environment and map out your access point’s placement and alignment to ensure your WLAN performs well. The WLAN design consists of systems and solutions, tested, and documented to facilitate faster, more reliable, and more predictable customer deployments. It all starts with a proper wireless site survey to get the optimal locations for WAPs to minimize channel interference, maximize the range and throughput.

Wi-Fi Hotspots:

A hotspot is a physical location that offers Internet access over a wireless local area network (WLAN) through the use of a wireless router or wireless access points connected to a link to an Internet. A hotspot is differentiated from a wireless access point, which is the hardware device used to provide the wireless network service. Hotspots typically use Wi-Fi technology. Some devices and smartphones also act as mobile Wi-Fi hotspots.

Hotspots are often found at airports, bookstores, coffee shops, department stores, fuel stations, hotels, hospitals, libraries, public payphones, restaurants, parks and campgrounds, supermarkets, train stations, and other public places. Additionally, many schools colleges and universities have wireless networks on their campuses.

Typical Wi-Fi hotspot venues include cafes, libraries, airports, hotels and  shopping malls, it depends on the business to business, some businesses either may charge for Wi-Fi hotspots or may provide Wi-Fi hotspots freely to their customers, vendors, partners, and guests

Site Surveys and Bill of Material

The wireless site survey is the usual approach to determine the RF coverage, user density, device density, Although a diligent wireless site survey is required to identify the potential sources of interference, Suitable WLAN controllers for managing their entire wireless network with security policies, access points, cell sizes antennas  as well as  proper placement, installation, and configurations of all 802.11 components.

The essentials considerations while doing a wireless site survey.

• Define spectrum, coverage and application analysis: understanding why the both spectrum and coverage analysis is considered mandatory and application analysis is usually optional.
• Identify sources of WLAN Interference: Describes the all various devices that are potential sources of interference in both 2.4GHz and 5GHz UNII bands.
• Explain RF Measurement: describes the procedure while conducting then coverage analysis and different RF measurements like received signal strength, SNR (signal to noise ratio) and dynamic frequency selection (DFS).
• Understanding the AP placement and configurations: it explains how AP placement, power, and channel setting are part of coverage analysis.
• Identify the Site survey tools: Understanding the difference between an outdoor and indoor site survey and all necessary tools required.

WLAN Bill of materials

WLAN bill of materials is prepared on a case to case basis. Usually, the WLAN bill of the material consists of unified WLAN controllers, Indoor access points, Outdoor access points, wireless routers, PoE (power over Ethernet) injectors, PoE Switches, non-PoE switches, power adapters, Antennas, repeaters, mounting plates connecting cables etc..

Installation and Configuration of Wireless Access Points and WLAN Controllers

The unified Enterprise Wireless LAN controllers with lightweight access points suitable for the enterprise and large networks like Schools, colleges, factories, hotels, airports, shopping malls and where the customers need the centralized monitoring and management for their Wi-Fi network. It is very easy to install and configure. The WLAN controller based RF technology is helpful to create seamless connectivity on a wireless network for the employees and guests as well. The smart RF switch with the lightweight APs will support warehouse deployment, where the customer is looking to integrate the RF scanners like Motorola RF scanners, Cisco RF scanners, wireless Barcode scanners, wireless printers etc. The RF controllers or switches has a built in security features to secure your wireless network. We can integrate these RF controllers and standalone access points to the Active Directory (domain controllers) to have more security on any wireless network. These RF controllers help you to create the guest portals to manage your guest Wi-Fi network.

There are a different set of RF controller models and APs (access points) are available in the market. We will assure you choose the suitable controller with APs for your network.

The RF controller’s configuration guides and releases notes having GUI (graphical user interface) and CLI (command line interface) to configure, manage and troubleshoot the wireless network.

Seamless Mobility:

The cellular based WAPs deployment will increase the coverage area of the wireless network and it will offer the seamless connectivity for the mobile users within the secured wireless network at a very good speed. We can achieve this by creating the Same SSIDs (service set identifiers) at different channels of different APs. We can also create the guest SSIDs to manage the guest users on same wireless access points. Usually all enterprise wireless LAN model APs support minimum of 15 SSIDs.

Centralized Wireless Management

The centralized WLAN architecture contains Enterprise Wireless LAN controller which resides in the core of the network. In the centralized wireless network architecture, autonomous (Standalone) APs are replaced with lightweight (Depended) APs. Using the centralized management we can manage the APs (access points) and users. The multiple user multi-VLAN can be Managed by the Enterprise Wireless LAN controller.

Wireless LAN Security

Wireless security is the prevention of unauthorized access or damage to computers using wireless networks. The most common types of wireless security are Wired Equivalent Privacy (WEP) and Wi-Fi Protected Access (WPA). WEP is a notoriously weak security standard. The password it uses can often be cracked in a few minutes with a basic laptop computer and widely available software tools. WPA was a quick alternative to improve security over WEP. The current standard is WPA2; some hardware cannot support WPA2 without firmware upgrade or replacement. WPA2 uses an encryption device that encrypts the network with a 256-bit key; the longer key length improves security over WEP.  it is very important that enterprises define effective wireless security policies that guard against unauthorized access to important resources. Wireless Intrusion Prevention Systems (WIPS) or Wireless Intrusion Detection Systems (WIDS) are commonly used to enforce wireless security policies.

Security Measures

• SSID Hiding
• MAC ID Filtering
• Static IP Addressing
• 802.11 Security
• Regular WEP
• WPAv1
• TKIP, EAP
• WPAv2

Implementing Network Encryption

In order to implement 802.11i, one must first make sure both that the router/access point, as well as all client devices, are indeed equipped to support the network encryption. If this is done, a server such as RADIUS, ADS, NDS, or LDAP needs to be integrated. This server can be a computer on the local network, an access point/router with the integrated authentication server, or a remote server. AP’s/routers with integrated authentication servers are often very expensive and specifically, an option for commercial usage likes hot spots. Hosted 802.1X servers via the Internet require a monthly fee; running a private server is free yet has the disadvantage that one must set it up and that the server needs to be on continuously.

To set up a server, server and client software must be installed. Server software required is an enterprise wireless LAN authentication server such as RADIUS, ADS, NDS, or LDAP. The required software can be picked from various suppliers as Microsoft, Cisco, Funk Software, Meetinghouse Data, and from some open-source projects. Software includes:

• Aradial RADIUS Server
• Cisco Secure Access Control Software
• freeRADIUS (open-source)
• Funk Software Steel-Belted RADIUS (Odyssey)
• Microsoft Internet Authentication Service
• Meetinghouse Data AEGIS
• SkyFriendz (free cloud solution based on free RADIUS)

RADIUS

Remote Authentication Dial-In User Service (RADIUS) is an AAA (authentication, authorization and accounting) protocol used for remote network access. RADIUS was originally proprietary but was later published under ISOC documents RFC 2138 and RFC 2139. The idea is to have an inside server act as a gatekeeper by verifying identities through a username and password that is already pre-determined by the user. A RADIUS server can also be configured to enforce user policies and restrictions as well as record accounting information such as connection time for purposes such as billing.

RADIUS Server Configuration

The RADIUS host is normally a multiuser system running RADIUS server software from Cisco (CiscoSecure ACS), Livingston, Merit, Microsoft, or another software provider. Configuring the router to RADIUS server communication can have several components:

• Hostname or IP address
• Authentication destination port
• Accounting destination port
• Timeout period
• Retransmission value
• Key string

Wireless LAN Sustenance Support

As the time passes away, there are more devices as a user or noise creator. The IT has to keep looking at the health of the Enterprise Wireless LAN and Radio Frequency (RF) Levels to ensure that the planned levels of Wireless Access are available.

The channel allocation is challenging considering Excellent Signal to Noise Ratio (SNR).

The IEEE 802.11 Wi-Fi / WLAN standards set the attributes for the different channels that may be used.

These attributes enable different Wi-Fi modules to talk to each other and effectively set up a WLAN.

To ensure that Enterprise Wireless LAN solutions operate satisfactorily, parameters such as the RF signal center frequencies, channel numbers, and the bandwidths must all be set

Wi-Fi is aimed at use within the unlicensed spectrum. This enables users to access the radio spectrum without the need for the regulations and restrictions that might be applicable elsewhere. The downside is that this spectrum is also shared by many other users and as a result, the system has to be resilient to interference.

There are a number of unlicensed spectrum bands in a variety of areas of the radio spectrum. Often these are referred to as ISM bands – Industrial, Scientific and Medical, and they carry everything from microwave ovens to radio communications. Many of these bands, including the two used for Enterprise Wireless Lan, are global allocations, although local restrictions may apply for some aspects of their use.

For more information, Contact us!