SETTING UP YOUR COMPUTERS

The OfficeConnect Cable/DSL Secure Gateway has the ability to dynamically allocate network addresses to the computers on your network, using DHCP. However, your computers need to be configured correctly for this to take place. To change the configuration of your computers to allow this, follow the instructions in this chapter.

If your computers are configured with static addresses (also known as fixed addresses) and you do not wish to change this, then you should use the Discovery program on the Gateway CD-ROM to detect and configure your Gateway. Refer to “Using Discovery” on page 71 for information on using the Discovery program.

Obtaining an IP Address Automatically

Windows 2000, XP

If you are using a Windows 2000 or Windows XP computer, use the following procedure to change your TCP/IP settings (Windows XP specific instructions in brackets):

1From the Windows Start Menu, select Settings > Control Panel (select Control Panel directly from the Start menu in Windows XP)

2Double click on Network and Dial-Up Connections (Network and Internet Connections). For XP only — click on Network Connections.

3Double click on Local Area Connection.

4Click on Properties.

5A screen similar to Figure 6 should be displayed. Select Internet Protocol (TCP/IP) and click on Properties.

Figure 6 Local Area Connection Properties

6Ensure that the options Obtain an IP Address automatically, and Obtain DNS server address automatically are both selected as shown in Figure 7. Click OK.

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3Com 3CR856-95 manual Setting UP Your Computers, Obtaining an IP Address Automatically, Windows 2000, XP

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.