HP Deskjet 6840 Color Inkjet Printer - Manual (Page 28)

Authentication
Definition
Authentication verifies the identity of a user or device before granting access to a
network, making it more difficult for unauthorized users to access network
resources.
In order to be authenticated and allowed to use a network, a device must supply a
known password to other devices on the network. If the device cannot supply the
correct password, then it will not be able to use other devices on the network.
Types of authentication
The printer supports three types of authentication. Each type of authentication has
its benefits and limitations.
Authentication type Description Benefits Limitations
Open System
Devices on a
network identify
themselves with
the network
name (SSID)
only.
Least complicated
strategy.
Provides little
protection against
unauthorized users.
Shared Key
Devices use a
shared master
secret to identify
themselves as
authorized
members of the
network.
Convenient to use in
conjunction with
WEP, since a WEP
key can serve as the
shared
authentication key.
All devices must
have the key.
The shared key
does not change
automatically.
WPA/PSK
Devices use a
single pre-shared
key (PSK) to
identify
themselves as
authorized
members of the
network and to
generate an
encryption key.
The pre-shared key
and the encryption
keys are not
identical.
Allows smaller
networks to use
WPA without the
need for an
authorization
server.
All devices must
have the key.
HP Deskjet 6800 series printer User's Guide
28