Fragmentation Threshold; Wireless Security; Figure 33 Zywall Wireless Security Levels - ZyXEL Communications ZyWall 35 User Manual

6.2.4 Fragmentation Threshold

A Fragmentation Threshold is the maximum data fragment size (between 256 and 2432
bytes) that can be sent in the wireless network before the ZyWALL will fragment the packet
into smaller data frames.
A large Fragmentation Threshold is recommended for networks not prone to interference
while you should set a smaller threshold for busy networks or networks that are prone to
interference.
If the Fragmentation Threshold value is smaller than the RTS/CTS value (see previously)
you set then the RTS (Request To Send)/CTS (Clear to Send) handshake will never occur as
data frames will be fragmented before they reach RTS Threshold size.

6.3 Wireless Security

Wireless security is vital to your network to protect wireless communication between wireless
stations, access points and other wireless.
The figure below shows the possible wireless security levels on your ZyWALL. EAP
(Extensible Authentication Protocol) is used for authentication and utilizes dynamic WEP key
exchange. It requires interaction with a RADIUS (Remote Authentication Dial-In User
Service) server either on the WAN or your LAN to provide authentication service for wireless
stations.

Figure 33 ZyWALL Wireless Security Levels

If you do not enable any wireless security on your ZyWALL, your network is accessible to any
wireless networking device that is within range.
Chapter 6 Wireless LAN and Authentication Server
ZyWALL 35 User's Guide
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