FR328S ProSafe Firewall with Dial Back-Up Reference Manual v2

Class D

Class D addresses are used for multicasts (messages sent to many hosts). Class D addresses are in this range:

224.0.0.0 to 239.255.255.255.

Class E

Class E addresses are for experimental use.

This addressing structure allows IP addresses to uniquely identify each physical network and each node on each physical network.

For each unique value of the network portion of the address, the base address of the range (host address of all zeros) is known as the network address and is not usually assigned to a host. Also, the top address of the range (host address of all ones) is not assigned, but is used as the broadcast address for simultaneously sending a packet to all hosts with the same network address.

Netmask

In each of the address classes previously described, the size of the two parts (network address and host address) is implied by the class. This partitioning scheme can also be expressed by a netmask associated with the IP address. A netmask is a 32-bit quantity that, when logically combined (using an AND operator) with an IP address, yields the network address. For instance, the netmasks for Class A, B, and C addresses are 255.0.0.0, 255.255.0.0, and 255.255.255.0, respectively.

For example, the address 192.168.170.237 is a Class C IP address whose network portion is the upper 24 bits. When combined (using an AND operator) with the Class C netmask, as shown here, only the network portion of the address remains:

11000000 10101000 10101010 11101101 (192.168.170.237)

combined with:

11111111 11111111 11111111 00000000 (255.255.255.0)

Equals:

11000000 10101000 10101010 00000000 (192.168.170.0)

As a shorter alternative to dotted-decimal notation, the netmask may also be expressed in terms of the number of ones from the left. This number is appended to the IP address, following a backward slash (/), as “/n.” In the example, the address could be written as 192.168.170.237/24, indicating that the netmask is 24 ones followed by 8 zeros.

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Networks, Routing, and Firewall Basics

M-10207-01, Reference Manual v2

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NETGEAR FR328S manual Netmask

FR328S specifications

The NETGEAR FR328S is a versatile, high-performance router designed to meet the demands of small to medium-sized networks. This device is particularly well-suited for business environments that require reliable connectivity and robust security features. One of the standout characteristics of the FR328S is its ability to deliver advanced networking capabilities while maintaining ease of use.

At the heart of the FR328S is its high-speed performance, which supports both wired and wireless connections. Equipped with multiple Ethernet ports, the router allows users to connect various devices, ensuring seamless data transfer and reliable connections. This model supports up to 28 simultaneous devices, making it ideal for collaborative environments and ensuring that multiple users can access the network without interruption.

The FR328S features robust security protocols that protect sensitive data from unauthorized access. It supports VPN pass-through, which allows remote users to securely connect to the network. Additionally, the router includes advanced firewall capabilities and supports various security standards such as WPA2, ensuring that users can communicate in a secure online environment.

Another significant feature of the FR328S is its ability to provide Quality of Service (QoS). This technology prioritizes bandwidth for critical applications, such as video conferencing and VoIP, ensuring optimal performance even under high network traffic. The intuitive user interface makes it easy to set up and manage QoS settings, allowing administrators to optimize the network according to their specific needs.

The NETGEAR FR328S also supports dynamic routing protocols, such as RIP v1, v2, and static routing, providing flexibility in network configuration and scalability. Its ability to integrate seamlessly with various network devices ensures that it can adapt to changing network environments.

In summary, the NETGEAR FR328S is a powerful networking solution that combines high-speed performance, robust security features, and advanced QoS capabilities. Its user-friendly design makes it a practical choice for small to medium-sized businesses looking for reliability and efficiency in their networking infrastructure. With its comprehensive feature set, the FR328S is well-equipped to handle the challenges of modern networking needs.