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Wireless
Networks
Cisco WAP131 and WAP351 Administration Guide
Configuring Security Settings
These sections describe the security settings that you configure, depending on
your selection in the Security list on the Networks page.
None (Plain-text)
If you select None as your security mode, no additional security settings are
configurable on the WAP device. This mode means that any data transferred to
and from the WAP device is not encrypted. This security mode can be useful
during initial network configuration or for problem solving, but it is not
recommended for regular use on the internal network because it is not secure.
Static WEP
Wired Equivalent Privacy (WEP) is a data encryption protocol for 802.11 wireless
networks. All wireless stations and access points on the network are configured
with a static 64-bit (40-bit secret key plus 24-bit initialization vector (IV)) or 128-bit
(104-bit secret key plus 24-bit IV) Shared Key for data encryption.
Static WEP is not the most secure mode available, but it offers more protection
than setting the security mode to None (Plain-text), as it does prevent an outsider
from easily sniffing out unencrypted wireless traffic.
WEP encrypts data moving across the wireless network based on a static key.
(The encryption algorithm is a stream cipher called RC4.)
These parameters configure Static WEP:
•
Transfer Key Index—Enter a key index list. Key indexes 1 through 4 are
available. The default is 1. The Transfer Key Index indicates which WEP key
the WAP device uses to encrypt the data it transmits.
•
Key Length— Choose either 64 bits or 128 bits as the length of the key.
•
Key Type—Choose either ASCII or Hex as the key type.
•
WEP Keys—You can specify up to four WEP keys. In each text box, enter a
string of characters for each key. The keys you enter depend on the key
type selected:
-
ASCII — Includes uppercase and lowercase alphabetic letters, the
numeric digits, and special symbols such as @ and #.
-
Hex — Includes digits 0 to 9 and the letters A to F.
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