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WS 2000 Wireless Switch System Reference Guide4-4
Configuring the WS 2000 Firewall
The WS 2000 Wireless Switch provides a secure firewall/Network Address Translation (NAT) solution for the WAN uplink.
The firewall includes a proprietary CyberDefense Engine to protect internal networks from known Internet attacks. It also
provides additional protection by performing source routing, IP unaligned timestamp, and sequence number prediction. The
firewall uses a collection of filters to screen information packets for known types of system attacks. Some of the switch’s
filters are always enabled, and others are configurable.
To view or change the firewall settings, select Network Configuration --> WAN --> Firewall from the left menu.
Disabling the Firewall
The firewall can be enabled or disabled with one click. Check Disable Firewall if the filters should not be active. By default
the firewall is enabled.
Setting the NAT Timeout
On the firewall screen is the NAT Timeout field. Enter a value here, in minutes, to specify the number of minutes before an
inactive WAN generated connectiont is timed out by the switch's firewall.
Configurable Firewall Filters
The administrator can enable or disable the following filters. By default, all filters are activated. It is safe to turn the filters
off if one of the following things is true:
• The switch is on a completely isolated network with no access to the Internet and is therefore secure.
• The switch is heavily loaded a slight increase in performance outweighs the safety of the network.