3.5.2. Security
3.5.2.1. Basic
Fig. 73. IEEE 802.11b basic security settings.
For security reasons, it’s highly recommended that the security mode be set to options other than
Open System
. When the security mode is set to Open System, no authentication and data encryption
will be performed. Additionally, you can
disable
the SSID broadcasts
functionality so that a wireless
client computer with an “any” SSID cannot associate with the wireless access gateway.
When the
Wireless client isolation
setting is set to
This AP only
, wireless clients of this wireless ac-
cess gateway as an AP cannot see each other, and wireless-to-wireless traffic is blocked. When the
setting is set to
All APs in this subnet
, traffic among wireless users of different APs in the same IP
subnet is blocked. This feature is useful for WLANs deployed in public places. In this way, hackers
have no chance to attack other wireless users in a
hotspot
. The behaviors are illustrated in the follow-
ing figures.
AP 1
AP 2
STA 1
STA 2
STA 3
Wireless Link
Ethernet Link
Switch
WCI:
This AP Only
WCI:
This AP Only
Fig. 74. Behavior of the “This AP Only” wireless client isolation option.
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