Figure 41 Virtual Servers Screen

Creating a Virtual DMZ

A virtual DMZ (De-Militarized Zone) Host is a computer on your network with reduced protection provided by the firewall. This feature allows a single computer to be exposed to 2-way communication from outside of your network. The PC is still protected against DoS and hacker attacks.

CAUTION: 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, select Redirect Request to Virtual DMZ Host and enter the IP address of the computer in the IP Address of DMZ Host text box, and then click SAVE.

Creating a Virtual Server

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.

If you are using One-to-Many NAT you can only have one server of each type on your network. To have more than one server of a type (for example more than one web server) visible to the Internet you must be using One-to-One NAT.

To configure a virtual server:

1Click New on the right side of the screen to open the Virtual Server Settings dialogue box. (Figure 41)

2Enter the IP address of the computer in the Server IP Address text box.

3Select the Service from the pull-down list. (Figure 42)

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3Com 3CR856-95 manual Creating a Virtual Server, Creating a Virtual DMZ
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3CR856-95 specifications

The 3Com 3CR856-95 is a versatile networking device designed to meet the demands of small to medium-sized businesses. As a part of the 3Com OfficeConnect series, the 3CR856-95 combines switching, routing, and security features into a compact, integrated solution that enhances network performance and reliability.

One of the main features of the 3CR856-95 is its ability to support multiple network configurations. It operates as a router and switch simultaneously, offering six Ethernet ports for wired connections, while also integrating wireless capabilities. This allows businesses to connect various devices seamlessly, including computers, printers, and smartphones, providing flexibility and convenience in a modern office environment.

The device incorporates advanced technologies such as Quality of Service (QoS) which prioritizes network traffic to ensure that bandwidth-intensive applications like video conferencing and VoIP run smoothly. This feature is essential for maintaining productivity and communication efficiency in busy office settings. Additionally, the 3CR856-95 supports both IPv4 and IPv6 protocols, making it a future-proof solution as businesses transition to the newer Internet Protocol standard.

Security is a critical consideration for any networking equipment, and the 3CR856-95 addresses this with robust measures. It includes a built-in firewall that protects the network from external threats, along with support for Virtual Private Networks (VPN), allowing secure remote access for employees working from off-site locations. Furthermore, the device supports WPA2 encryption for wireless connections, safeguarding sensitive data transmitted over the network.

Another important characteristic of the 3CR856-95 is its user-friendly interface, which simplifies the setup and management of the network. The device features a web-based management console that allows network administrators to easily configure settings, monitor traffic, and troubleshoot issues from any internet-connected device. This accessibility saves time and reduces the complexity often associated with network management.

In summary, the 3Com 3CR856-95 is a robust and feature-rich networking solution tailored for small to medium-sized businesses. With its combination of switching, routing, and security features, it provides a reliable platform for facilitating seamless communication and connectivity. Its support for advanced technologies and user-friendly management interface makes it a smart choice for organizations looking to enhance their network infrastructure.
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