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The Private port is used for multi-computers, which might use the same service.

For example, if you setup three Web server(80) in your LAN, which are 192.168.123.7,

192.168.123.10, and 192.168.123.77. You can assign different public port to different IP. The public

port can be set at any port. But please must avoid the confliction. And anyone who would like to

connect must be aware of the port difference.

Public Port

Private

Server IP

Enable

777

80

192.168.123.7

V

888

80

192.168.123.10

V

999

80

192.168.123.77

V

37

4.5.2 Special AP

Some applications require multiple connections, like Internet games, Video conferencing, Internet

telephony, etc. Because of the firewall function, these applications cannot work with a pure NAT router.

The

Special Applications

feature allows some of these applications to work with this product. If the

mechanism of Special Applications fails to make an application work, try setting your computer as the

DMZ

host instead.

1.

Trigger

: the outbound port number issued by the application..

2.

Incoming Ports

: when the trigger packet is detected, the inbound packets sent to the specified

port numbers are allowed to pass through the firewall.

This product provides some predefined settings Select your application and click

Copy

to

to add the

predefined setting to your list.

Note! At any given time, only one PC can use each Special Application tunnel.

Check

“Enable”

to activate the setting.

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4.5.3 Miscellaneous Items

IP Address of DMZ Host

DMZ (DeMilitarized Zone) Host is a host without the protection of firewall. It allows a computer to be

exposed to unrestricted 2-way communication for Internet games, Video conferencing, Internet

telephony and other special applications.

NOTE: This feature should be used only when needed.

Non-standard FTP port

You have to configure this item if you want to access an FTP server whose port number is not 21. This

setting will be lost after rebooting.

UPnP Setting

Enable or disable the UPnP function of WBR-5400

39

4.6 Security Settings

40

4.6.1 Packet Filter

Packet Filter enables you to control what packets are allowed to pass the router. Outbound filter applies

on all outbound packets. However, Inbound filter applies on packets that destined to Virtual Servers or

DMZ host only. You can select one of the two filtering policies:

1.

Allow all to pass except those match the specified rules

2.

Deny all to pass except those match the specified rules

You can specify 8 rules for each direction: inbound or outbound. For each rule, you can define the

following:

•

Source IP address

•

Source port address

•

Destination IP address

•

Destination port address

•

Protocol: TCP or UDP or both.

•

Use Rule#

For source or destination IP address, you can define a single IP address (4.3.2.1) or a range of IP