User's Manual

Administrative Guide Configuration

6.4.4.3 DMZ

The EUT will forward IP packets from the WAN that do not belong to any of the

applications configured in the Virtual Servers table to the DMZ host computer. (Figure 6-

14)

Figure 6-14. Advanced Setup – NAT – DMZ

6.4.5 Security

The configuration display only when WAN page’s security option is selected. It’s

separated into three parts: Incoming Filter, Output Filter, and Parental Control.

6.4.5.1 Incoming Filter

It allows the users to create a filter rule to identify incoming IP traffic by specifying a new

filter name and at least one condition. All of the specified conditions in this filter rule

must be satisfied for the rule to take effect. (Figure 6-15-1, Figure 6-15-2)

By default, all incoming IP traffic from the WAN will be blocked if it is not consistent with

the incoming filter rules. In fact, EUT has opened some necessary ports such as

web port, sip ports and rtp ports, to make sure that voice application can communicate

well.