HP Jetdirect ew2500 HP Jetdirect ew2500 802.11g Wireless Print Server Setup Gu - Page 14

Encryption, Infrastructure mode, Static Encryption - manual

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of available channels authorized for use may be restricted based on your location (see Radio characteristics on page 42). ● If the print server is powered on and discovers a wireless network whose SSID (network name) is also "hpsetup", it will automatically adjust its channel to match that network. ● If the print server is reconfigured for Infrastructure mode, it will automatically adjust its channel to match the Access Point. 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 may be used. For HP Jetdirect print servers in their factory-default state, encryption of wireless communications is disabled. However, the print servers support static WEP and popular dynamic encryption protocols. NOTE: Wireless performance may be reduced when using encryption keys due to the additional processing time required. Static Encryption. WEP 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. Both 40-bit and 64-bit encryption are really the same, as are 104-bit and 128-bit encryption. When entering WEP keys, the user specifies 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 guide, we will use "40/64-bit" and "104/128bit" to specify these WEP encryption levels. For basic encryption, static WEP keys are configured on each device on the wireless network. WEP keys are considered static because they remain the same unless manually reconfigured. For example, on a typical Infrastructure mode network that uses static WEP encryption, a change to the WEP key on an Access Point will require a manual change to the WEP key on each wireless device. HP Jetdirect wireless print servers support configuration of up to four static WEP keys, for either 40/64bit 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 difficult to decipher. Dynamic encryption protocols, such as dynamic WEP and wi-fi protected access (WPA/WPA2), provide a more secure wireless environment. When configured 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 sometimes referred to as "enterprise mode." On Apple networks, Infrastructure mode is called Airport Network mode. When set 6 Chapter 1 Introduction ENWW

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of available channels authorized for use may be restricted based on your location (see
Radio
characteristics
on page
42
).
●
If the print server is powered on and discovers a wireless network whose SSID (network name) is
also “hpsetup”, it will automatically adjust its channel to match that network.
●
If the print server is reconfigured for Infrastructure mode, it will automatically adjust its channel to
match the Access Point.
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 may be used.
For HP Jetdirect print servers in their factory-default state, encryption of wireless communications is
disabled. However, the print servers support static WEP and popular dynamic encryption protocols.
NOTE:
Wireless performance may be reduced when using encryption keys due to the additional
processing time required.
Static Encryption
. WEP 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. Both
40-bit and 64-bit encryption are really the same, as are 104-bit and 128-bit encryption. When entering
WEP keys, the user specifies 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 guide, we will use “40/64-bit” and “104/128bit” to specify these WEP encryption levels.
For basic encryption, static WEP keys are configured on each device on the wireless network. WEP
keys are considered static because they remain the same unless manually reconfigured. For example,
on a typical Infrastructure mode network that uses static WEP encryption, a change to the WEP key on
an Access Point will require a manual change to the WEP key on each wireless device.
HP Jetdirect wireless print servers support configuration 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 difficult to decipher.
Dynamic encryption protocols, such as dynamic WEP and wi-fi protected access (WPA/WPA2), provide
a more secure wireless environment.
When configured 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 sometimes referred to as
“enterprise mode.” On Apple networks, Infrastructure mode is called Airport Network mode. When set
6
Chapter 1
Introduction
ENWW