HP Jetdirect 2700w USB Wireless Print Server Bedienungsanleitung PDF herunterladen (Seite 18)

Encryption

Wireless networks use radio signals for network communications, which can be easily monitored by someone

eavesdropping on the network. To deter eavesdropping and to help ensure data privacy, encryption of

wireless communications should be used.

For HP Jetdirect print servers in their factory-default state, encryption of wireless communications is

disabled. However, the print servers support wi- protected access (WPA/WPA2) and other popular dynamic

encryption protocols.

NOTE: Wireless performance might be reduced when using encryption keys due to the additional processing

time required.

Static encryption. WEP (Wired Equivalent Privacy) encryption protocols were developed to provide a basic

level of data privacy. WEP protocols use static encryption keys to encrypt and decrypt wireless

communications.

NOTE: WEP encryption levels are sometimes called 40-bit, 64-bit, 104-bit, or 128-bit encryption. Forty-bit

and 64-bit encryption are really the same, as are 104-bit and 128-bit encryption. When entering WEP keys,

the user species 40 bits for 64-bit encryption, or 104 bits for 128-bit encryption. An additional 24

initialization vector (IV) bits are automatically added for a total of 64 bits and 128 bits, respectively. In this

setup guide, 40/64-bit and 104/128bit are used to specify these WEP encryption levels.

For basic encryption, static WEP keys are congured on each device on the wireless network. WEP keys are

considered static because they remain the same unless manually recongured. For example, on a typical

infrastructure mode network that uses static WEP encryption, a change to the WEP key on an access point

requires a manual change to the WEP key on each wireless device.

HP Jetdirect wireless print servers support conguration of up to four static WEP keys, for either 40/64-bit or

104/128-bit encryption.

Dynamic encryption. For advanced encryption methods, dynamic encryption protocols are used. For dynamic

encryption protocols, encryption keys are automatically changed at routine intervals making them dicult to

decipher.

Dynamic encryption protocols, such as dynamic WEP and Wi-Fi Protected Access (WPA/WPA2), provide a more

secure wireless environment.

When congured for WPA/WPA2–Personal authentication, HP Jetdirect print servers use WPA encryption.

Infrastructure mode

Infrastructure mode is a wireless network topology where all wireless communications go through an access

point. Infrastructure mode is called a Basic Service Set (BSS), and is sometimes referred to as enterprise

mode. On Apple networks, infrastructure mode is called Airport network mode. When set in this mode, the

HP Jetdirect print server receives print jobs from wireless network computers through an access point.

Security type

Security is used to validate the identication of each device or computer that is attempting to access a

network. The security type used on a network is determined during network design and depends on the

network security requirements. Consequently, security methods are closely associated with encryption

options that are also used on the network.

HP Jetdirect wireless print servers support the following security types:

12 Appendix A Glossary ENWW

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HP Jetdirect 2700w USB Wireless Print Server Bedienungsanleitung Seite 18