HP Deskjet 6840 Color Inkjet Printer - Manual (Page 31)

For example, if the printer's network uses WPA, only devices that have the same
WPA settings as the printer will be able to use the printer.
WPA provides better security than
WEP .
WPA is a network feature
WPA is an optional wireless network feature. Not all wireless networks use WPA.
Configure the printer for WPA only if the printer's network uses WPA. The printer's
WPA settings must match the network's settings.
If the printer's network does not use WPA, then do not configure the printer to use
WPA.
If you do not know if your network uses WPA, consult the configuration utility for
your computer's NIC card or your network's Wireless Access Point (WAP) .
Encryption
WPA uses encryption keys to encode data.
The printer supports two types of WPA encryption: TKIP and AES.
For more information about TKIP and AES, see the
authentication and encryption
page .
Configuring the printer to use WPA
Follow these steps to configure the printer to use WPA:
1. Open the printer's embedded Web server (EWS) .
2. Click the Networking tab.
3. Under Connections, click Wireless (802.11).
4. On the Wireless Setup tab, click the Start Wizard button, and then follow the
onscreen instructions
5. After configuring the printer, close the EWS.
5.3.8 Wired equivalent privacy (WEP)
Wired Equivalent Privacy (WEP) provides security by encrypting data sent over
radio waves from one wireless device to another wireless device.
WEP can also provide security through authentication. For more information about
authentication and encryption, see the authentication and encryption page .
WEP encodes the data sent across the network making the data unintelligible to
eavesdroppers. Only devices that share the same WEP settings as the printer will
be able to communicate with the printer.
HP Deskjet 6800 series printer User's Guide
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