ZyXEL Communications ZYWALL 70 - V4.04 Guía de usuario descargar pdf (Pagina 100)

ISP(or network). This secondary WAN port can be used in “active-active” load sharing

or fail-over configuration providing a highly efficient method for maximizing total

network bandwidth.

The default mode of the WAN 2 interface is “Active-Passive” or “Fail-Over” mode, that

is the secondary WAN will automatically “bring-up” when the first WAN fails. The user

can enter eWC/WAN/General page to select WAN to “Active/Active” mode. At

“Active/Active” mode, ZyWALL can access internet through WAN 1 and WAN 2

simultaneously. The user also can setup policy route rule and static route rule to specify

the traffic to certain link. ZyWALL Connectivity Check will check the connectivity of

WAN 1, WAN 2 and Traffic Redirect. Please notice that even at the “Active/Active”

mode, WAN 2 is still the backup line of WAN 1, and WAN 1 is also the backup line of

WAN 2.

The user can use policy routing to specify the WAN port that specific services go through.

If one WAN port’s connection goes down, the ZyWALL can automatically send its traffic

through the other WAN port, if the user allows this traffic to use the other WAN port.

The ZyWALL NAT feature allows the user to give two separate sets of rules(NAT

Mapping rules and Port Forwarding rules) for WAN 1 and WAN 2.

The DDNS also has the high availability feature based on Multiple WAN. That is the

ZyWALL can use the other WAN interface for domain names if the original configured

WAN interface goes down.

Appendix 8 Wi-Fi Protected Access

Wi-Fi Protected Access(WPA) is a subset of the IEEE 802.11i. WPA improves data

encryption by using TKIP, MIC and IEEE 802.1X. Because WPA applies 802.1X to

authenticate WLAN users by using an external RADIUS server, so you can not use the

Local User Database for WPA authentication.

For those users in home or small office, they have no RADIUS server, WPA provides the

benefit of WPA through the simple “WPA-PSK”. Pre-Shared Key(PSK) is manually

entered in the client and ZyWALL for authentication. ZyWALL will check the client

PSK and allow it join the network if it’s PSK is matched. After the client pass the

authentication, ZyWALL will derived and distribute key to the client, and both of then

will use TKIP process to encrypt exchanging data.

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ZyXEL Communications ZYWALL 70 - V4.04 Guía de usuario Pagina 100