ZyXEL Communications NWD-170N Manual do Utilizador descarregar pdf (Página 3)

Dual WAN Link Router

For many businesses today, no Internet is as bad as no electricity. Leverage available

broadband access and low prices to connect two data lines, not one, to your Internet Service

Provider (or two ISPs). Order those lines through two different suppliers, such as the phone

company for DSL and the cable company for a cable Internet connection.

Some routers use both connections at once for more throughput, while others use one and

engage the second when the first one fails (called fail-over). Yes, you could unplug one data

line and plug in the other, then reconfigure and reboot your router, and get the same effect.

But do you want to do that at 3:17 AM when the cable Internet connection goes down for

service? If not, spend the few extra dollars for a dual WAN (Wide Area Network) router.

You'll also appreciate the added security available in a new router.

Wireless Security

Early wireless networks leveraged convenience and novelty. But now that wireless is

normal, security must improve.

The first pass at wireless security, WEP (Wired Equivalent Privacy), served only to keep

honest people off your network, somewhat like a locked screen door. Businesses today

need WPA2 (WiFi Protected Access), using the new 802.1x security and authentication

standard and a 128-bit encryption key with extra cloaking against eavesdroppers. It's

not quite super-spy technology, but it's close and should be considered your minimum

wireless security leve

Storage and Backup

It's a good thing hard disks are cheap, because many users have lost their ability to delete

files. Before trying to stuff another disk into your server, test a Network Attached Storage

unit. These units attach to your network and makes pools of disk space available to some or

all of your users through basic user authentication software.

Terabytes of NAS disk space can be purchased today more cheaply than Gigabytes just a

few years ago. Many systems comes with fault tolerant disk drives, guaranteeing your

system will stay up in case of a hard disk failure. Just don't make the data rookie mistake of

buying a single NAS unit, or any extra storage, without extending your data backup system to

protect the files that will go on the new storage. Redundant disk drives protect your files

when one drive in a set of two or more dies, but they don't protect files accidentally deleted

by users. Some companies leverage the low cost of NAS devices to provide backup space for

groups of users. Always copy critical files to an offsite backup location to keep them safe in

case of disaster (both natural and clumsy tech kinds).

Hacker

WPA 2

Protection

Access Point

Last Words of Advice

Don't change two things at once.

Plan your budget so you can regularly

upgrade your network. Just like your

car needsb regular maintenance,

schedule regular network upgrades.

Housing developments must add

streets and electrical lines to support

new occupants, and you must improve

the network before new users appear.

A good network will be invisible to your

users. A great network will surprise

users with regular improvements.

James Gaskin on Top Security Upgrades

Office Office

Secure Wireless Network

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