Firewall; Virtual Servers; Virtual Dmz; Virtual Server - 3Com OfficeConnect 3C855 User Manual

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5: G

HAPTER

ATEWAY

ONFIGURATION

Firewall

On the main frame of the Firewall setup screen is a menu with four tabs: Virtual

Servers, Special Applications, PCs Privileges, and Security.

Selecting the Firewall option on the main menu displays the Virtual Servers setup

screen. (Figure 34)

Figure 34 Virtual Servers Screen

DMZ (De-Militarized Zone) Host is a computer without the protection of the

firewall. This feature allows a single computer to be exposed to unrestricted 2-way

communication from outside of your network. This feature should be used only if

the Virtual Server or Special Applications options do not provide the level of access

needed for certain applications.

To configure one of your computers as a DMZ host, enter the last digit(s) of the IP

address of the computer in the IP Address of DMZ Host text box, and then click

the SAVE button.

Activating and configuring a virtual server allows one or more of the computers on

your network to function as an Internet service host. For example, one of your

computers could be configured as an FTP host, allowing others outside of your

office network to download files of your choosing. Or, if you have created a Web

site, you can configure one of your computers as a Web server, so that others can

view your Web site.

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