Reference Manual for the ME103 802.11b ProSafe Wireless Access Point

MAC Addresses and ARP

An IP address alone cannot be used to deliver data from one LAN device to another. To send data between LAN devices, you must convert the IP address of the destination device to its media access control address (MAC address). Each device on an Ethernet network has a unique MAC address, which is a 48-bit number assigned to each device by the manufacturer. The technique that associates the IP address with a MAC address is known as address resolution. Internet Protocol uses the ARP to resolve MAC addresses.

If a device sends data to another station on the network and the destination MAC address is not yet recorded, ARP is used. An ARP request is broadcast onto the network. All stations on the network receive and read the request. The destination IP address for the chosen station is included as part of the message so that only the station with this IP address responds to the ARP request. All other stations discard the request.

The station with the correct IP address responds with its own MAC address directly to the sending device. The receiving station provides the transmitting station with the required destination MAC address. The IP address data and MAC address data for each station are held in an ARP table. The next time data is sent, the address can be obtained from the address information in the table.

For more information about address assignment, refer to the IETF documents RFC 1597, Address Allocation for Private Internets, and RFC 1466, Guidelines for Management of IP Address Space.

Internet Security and Firewalls

When your LAN connects to the Internet through a router, an opportunity is created for outsiders to access or disrupt your network. A NAT router provides some protection because by the very nature of the process, the network behind the router is shielded from access by outsiders on the Internet. However, there are methods by which a determined hacker can possibly obtain information about your network or at the least can disrupt your Internet access. A greater degree of protection is provided by a firewall router.

C-10

Network, Routing, Firewall, and Cabling Basics

August 2003

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NETGEAR ME103 manual Internet Security and Firewalls, MAC Addresses and ARP
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ME103 specifications

The NETGEAR ME103 is a versatile and reliable Wireless Access Point designed to extend the reach of your network while providing enhanced connectivity for various devices. Ideal for both home and small office environments, the ME103 is an essential component for those seeking to improve wireless performance without compromising on speed or stability.

One of the main features of the NETGEAR ME103 is its compatibility with numerous wireless standards. It supports the 802.11b and 802.11g protocols, allowing users to connect a wide range of wireless devices, including laptops, smartphones, and tablets. This compatibility ensures that the ME103 can seamlessly integrate into existing networks, making it a flexible solution for upgrading Wi-Fi coverage.

The ME103 is equipped with fast data transfer rates, reaching up to 54 Mbps in 802.11g mode. This speed is sufficient for most online activities, including streaming videos and online gaming, providing users with a smooth and uninterrupted experience. Its ability to function as both an access point and a bridge allows for increased versatility, enabling connectivity between wired and wireless devices.

In terms of security, the NETGEAR ME103 has built-in features that protect your network from unauthorized access. It supports Wired Equivalent Privacy (WEP) and Wi-Fi Protected Access (WPA) encryption protocols, ensuring that data transmitted over the network remains secure. Additionally, it includes a built-in firewall that further safeguards against potential threats.

The device is also equipped with an easy-to-use web interface for configuration, making it simple for users to set up and manage their network settings. Its compact design allows for flexible placement options, whether mounted on a wall or placed on a desk. This adaptability is crucial for optimizing wireless coverage in larger spaces.

Power over Ethernet (PoE) support is another significant characteristic of the ME103, which simplifies installation by allowing the device to receive power through the Ethernet cable, eliminating the need for an additional power source.

Overall, the NETGEAR ME103 stands out due to its high compatibility, solid performance, and ease of use, making it an excellent choice for users looking to enhance their wireless connectivity efficiently.
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