Security - Linksys WRT54G User Manual

Default Transmit Key Select which WEP key (1-4) will be used when the
Router sends data. Make sure the receiving device is using the same key.
WEP Encryption Select the level of WEP encryption you wish to use, 64-
bit 10 hex digits or 128-bit 26 hex digits. Higher encryption levels offer
higher levels of security, but due to the complexity of the encryption, they
may decrease network performance.
Passphrase Instead of manually entering WEP keys, you can enter a
Passphrase. This Passphrase is used to generate one or more WEP keys. It
is case-sensitive and should not be longer than 16 alphanumeric characters.
(This Passphrase function is compatible with Linksys wireless products
only. If you want to communicate with non-Linksys wireless products, enter
the WEP key manually on the non-Linksys wireless products.) After you
enter the Passphrase, click the Generate button to create WEP keys.
Keys 1-4 WEP keys enable you to create an encryption scheme for wireless
LAN transmissions. If you are not using a Passphrase, then manually enter
a set of values. (Do not leave a key field blank, and do not enter all zeroes.
These are not valid key values.)
If you are using 64-bit WEP encryption, then the key must be exactly 10
hexadecimal characters in length. If you are using 128-bit WEP encryption,
then the key must be exactly 26 hexadecimal characters in length. Valid
hexadecimal characters are "0"-"9" and "A"-"F".
Note: All Wireless-G and 802.11b devices in your network must use
the same Passphrase or WEP key.
Check all the values, and click the Apply button to save your WEP settings.
To cancel any changes you've entered on this page, click the Cancel button.
To get more information about the features, click the Help button.
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Instant Wireless Series
®
Wireless-G Broadband Router

Security

The Security screen allows you to change the Router's security settings. You
should change the factory default password, which is admin, to your own as
soon as possible. All users who try to access the Router's web-based utility or
Setup Wizard will be prompted for the Router's password.
Figure 6-8
Router Password The new Password must not exceed 32 characters in length
and must not include any spaces. Enter the new Password in the second field to
confirm it.
VPN Pass-Through Virtual Private Networking (VPN) is typically used for
work-related networking. For VPN tunnels, the Router supports IPSec Pass-
Through and PPTP Pass-Through.
IPSec - Internet Protocol Security (IPSec) is a suite of protocols used to
implement secure exchange of packets at the IP layer. To allow IPSec tun-
nels to pass through the Router, IPSec Pass-Through is enabled by default.
To disable IPSec Pass-Through, uncheck the box next to IPSec.
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