wireless network setup

chapter 15

Authentication

Authentication verifies the identity of a user or device before

 

granting access to the network, making it more difficult for

 

unauthorized users to get at network resources. The 802.11

 

standard supports several means of client authentication:

 

• A network with No Authentication (Open System) does

 

not screen network users based on their identities and

 

usually involves little more than supplying the correct

 

SSID.

 

• A network using Shared Key authentication provides

 

increased security by requiring users or devices to

 

identify themselves with a static key (a hexidecimal or

 

alphanumeric string).

 

• Server-based (EAP/802.1x) authentication provides

 

significantly stronger security, and is commonly used in

 

enterprise-level networks. A dedicated server verifies

 

the identity of a user or device requesting access to the

 

network before granting that access. Several different

 

wireless authentication protocols are available for use

 

on authentication servers (EAP-MD5, EAP-TLS,

 

EAP-TTLS, LEAP, and PEAP), and a network might have

 

more than one protocol in use. EAP-MD5 uses WEP

 

encryption and all the other EAP mechanisms use

 

dynamic encryption.

 

Note: Server-based authentication protocols must be

 

implemented through the HP PSC embedded Web

 

server.

 

 

AutoIP (APIPA)

Automatic Private IP Addressing. With APIPA, DHCP clients

 

can self-configure an IP address and subnet mask when a

 

DHCP server isn’t available.

 

When a DHCP client boots up, it first looks for a DHCP server

 

in order to obtain an IP address and subnet mask. If the client

 

is unable to find the information, it uses APIPA to

 

automatically configure itself with an IP address from a range

 

reserved especially for Microsoft. The IP address range is

 

169.254.0.1 through 169.254.255.254. The client also

 

configures itself with a default class B subnet mask of

 

255.255.0.0. A client uses the self-configured IP address

 

until a DHCP server becomes available.

 

 

CIFS

Common Internet File System. This provides network drive

 

letter access to the photo memory card on the AiO device.

 

The user is allowed to read/write files on the network from

 

the AiO device photo memory card.

 

 

DHCP Server

Dynamic Host Configuration Protocol server. This is a server

 

that dynamically manages a pool of IP addresses for use on

 

a network or the Internet. When a user logs into the network

 

he is loaned an IP address for the time he is attached to the

 

network. When a user logs off, the IP address is returned to

 

the pool for use by another device.

 

 

170

hp psc 2500 series

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HP 2510xi Network with No Authentication Open System does, Usually involves little more than supplying the correct
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2510xi specifications

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