Lancom 1723 VOIP User Manual page 112

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The passphrases for 802.11i or WPA do not have to be changed quite so
regularly as new keys are generated for each connection anyway. This is
not the only reason that the encryption with 802.11i/AES or WPA/TKIP is
so much more secure than the now obsolete WEP method. If you use WEP
encryption to maintain compatibility with older WLAN clients, regularly
change the WEP key in your access point.
If the data is of a high security nature, further improvements include addi-
tionally authenticating the client with the 802.1x method ('802.1x / EAP'
→page 113) or activate an additional encryption of the WLAN connection
as used for VPN tunnels ('IPSec over WLAN' →page 114). In special cases,
a combination of these two mechanisms is possible.
Detailed information about WLAN security and the various encryption

methods are to be found in the LCOS reference manual.
Please also observe the information in the "Standard WEP encryption"

box.
Chapter 11: Security settings
111