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Untitled Prezi

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Nosaiba Sallam

on 16 February 2013

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Transcript of Untitled Prezi

Radio Frequency
(RF) Planning Performance Capacity Applications & Devices Switching Scalability DHCP & DNS Role Based Access Control- Directory Services Integration- Roles and Policies- Security RBAC is the process of being able to assign a specific security role (for example: Employee) to a user or groups of users that connect to the network. In order to do this your system must have directory services integration and then be able to assign a Role to that user. It helps to think of your user groups in terms of what they need access to. Then consider creating a Security Policy that limits their access to only those systems. An Executive Role would include a Security Policy that allows them access to the financial servers, while an Employee Role would have limited access to sensitive servers. Integration with your directory services is a critical step to provide wireless security by being able to authenticate each user connecting to the network. The credentials created for each person inside your directory services should also be used to authenticate the user on the wireless infrastructure so that you have one database of users accessing the network. Static IP networks can present issues with AP and wireless client functionality. It is advised and preferred to have a dynamic IP network. Static IP networks can work but will prove in the end to be an administrative headache. Locally hosted DNS is also preferred as AP’s will be dependent on name resolution to find their controllers over layer 3 networks. If your network is a flat layer 2 network then this is not as critical. New 802.11N AP’s have potential for 600Mbps speeds. If these AP’s are connected to 10/100 Mbps switches the potential will not be reached. We advise and recommend Gigabit switches preferably with POE for connectivity with the AP’s Don’t paint yourself into a corner when choosing a solution for your WLAN. Make sure that whatever solution you choose will be able to easily accommodate your future wireless growth & future scaling.
as soon as you introduce wireless to your users they will want it everywhere. When planning take into account a full campus or wireless everywhere plan even though you may only have the budget for a few select locations. Knowing what devices and apps and its requirements will be running over the WLAN is helpful.
Voice and video are two very demanding apps for a wired NW much less a wireless one.
“multi-media grade WLAN”, which is to say you need the system to handle anything you want to put on it.
We recommend creating a list of apps and devices you’ll need to operate on the network and assigning an order of priority to them A site survey will uncover RF occurring already in your environment and advise accordingly.
so if your site is already saturated with 2.4GHz RF then moving some clients to the 5Ghz spectrum might be advantageous. Also knowing how much bandwidth will be needed to accommodate the apps and clients. Each wireless access point can handle a certain number of wireless clients or devices connecting to the network. Coverage Where do you need RF Coverage? (both indoor and outdoor)? How much throughput do you want to set as your benchmark? WHAT YOU NEED TO KNOW BEFORE YOU DEPLOY
SECURE HOSPITAL WIRELESS NETWORK Location-Based Services often known as Real Time Location Services (RTLS), is the ability to physically locate a user or device on a WLAN, as GPS.
using wireless APs to “triangulate” on a user or device, so the more APs are deployed, the more accurate the system will be. If considering RTLS, we recommend defining how accurate you need the system to be, for example: within 20 ft., so help define how dense an access point deployment you may need. Network Infrastructure POE & Power – Access points can be powered by POE (power over Ethernet) which makes the installation of cabling to the AP’s very clean and eliminates the need to have AC power locally at the AP location. Surge protected power will be needed at the location of the POE adapters or switches that are providing power to the AP’s. HOSPITAL WIRELESS NETWORK DESIGN
MedLAN User and Device Management Modeling & Simulation MedLAN system consists of the two main parts:
The mobile trolley that exists in (A&E) ward
the consultation point, within the hospital.
The mobile trolley consists of
laptop with a WLAN PCMCIA card.
An AP acts as a transiver for the network data to be transmitted to and received from the rest of the network structure.
A high quality digital camcorder is connected to the laptop
Add. medical instruments the consulting physician can have a choice of teleconferencing either from:
a fixed computer
or a mobile laptop.
or even be capable of transmittingvideo to a PDA
This way (and by placing additional access points to the general area where the consulting doctor would be),
the doctor can move around the area while only carrying a 200 gr PDA. The PDA will be equipped with a
PCMCIA card.
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