Intermec WA21 System Manual page 170

Chapter 6 — Configuring Security
156
When the Access Point Is the Authenticator
If the Allow SWAP check box is cleared, the access point that is acting as
the authenticator will not perform any authentications using SWAP.
Supplicants will need to authenticate with the authentication server using
TTLS or TLS.
However, older access points do not support these authentication
methods. If the Allow SWAP check box is checked, the access point that is
acting as the authenticator will authenticate any supplicants that offer
SWAP. Note that SWAP authentication is susceptible to downgrade
attacks from rogue supplicants, as it is easier to break SWAP than TLS or
TTLS.
Configuring Spanning Tree Security
Note: If you are implementing an 802.1x security solution, secure IAPP
and secure wireless hops are automatically enabled.
1 From the main menu, click Security > Spanning Tree Security. The
Spanning Tree Security screen appears.
2 In the IAPP Secret Key field, enter a secret key. This secret key must be
between 16 and 32 bytes.
3 Choose which authentication methods you want to use to authorize the
access point to communicate with the network. For help, see the next
table.
MobileLAN access WA2X System Manual