Connecting to the Internet

If you can browse to the Gateway configuration screens but cannot access sites on the Internet, check the following:

Confirm that the physical connection between the Gateway and the Cable/DSL modem is OK, and that the link status LEDs on both Gateway and modem are illuminated.

Confirm that the connection between the modem and the Cable/DSL interface is OK.

Ensure that you have entered the correct information into the Gateway configuration screens as required by your Internet Service Provider. Use the “Internet Settings” screen to verify this.

For DSL users, check that the PPPoE or PPTP user name, password and service name are correct, if these are required. Only enter a PPPoE service name if your ISP requires one.

For cable users, check whether your ISP requires a fixed MAC (Ethernet) address. If so, use the Clone MAC Address feature in the Gateway to ensure that the correct MAC address is presented, as described in “Configuring a Dynamic IP Address” on page 41.

Ensure that your computers are not configured to use a Web proxy. On Windows computers, this can be found under Control Panel > Internet Options > Connections.

Check PC Privileges to see if you have allowed your PCs to connect to the Internet. See “PC Privileges” on page 47.

Forgotten Password

If you can browse to the Gateway configuration screen but cannot log on because you do not know or have forgotten the password, follow the steps below to reset the Gateway to it’s factory default configuration. Warning: all your configuration changes will be lost, and you will need to run the configuration wizard again before you can re-establish your Gateway connection to the Internet. Also, other computer users will lose their network connections whilst this process is taking place, so choose a time when this would be convenient.

1Remove power from the Gateway.

2Disconnect all your computers and the cable/DSL modem from the Gateway.

3Using an Ethernet cable, connect the Ethernet Cable/DSL port on the rear of the Gateway to any one of the LAN ports.

4Re-apply power to the Gateway. The Alert LED will flash as the Gateway starts up, and after approximately 30 seconds will start to flash more slowly (typically 2 seconds on, 2 seconds off). Once the Alert LED has started to flash slowly, remove power from the Gateway.

5Remove the cable connecting the Cable/DSL port to the LAN port, and reconnect one of your computers to one of the Gateway LAN ports.

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3Com 3CR856-95 manual Connecting to the Internet, Forgotten Password

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.