ExpWave 240B Secure Outdoor Ethernet Radio Link

Chapter 9 Filter Setup Configuration

This chapter shows you how to create and apply filters.

9.1 About Filtering

Your ExpWave uses filters to decide whether to allow passage of a data packet and/or to make a call. There are two types of filter applications: data filtering and call filtering. Filters are subdivided into device and protocol filters, which are discussed later.

Data filtering screens the data to determine if the packet should be allowed to pass. Data filters are divided into incoming and outgoing filters, depending on the direction of the packet relative to a port. Data filtering can be applied on either the WAN side or the LAN side. For incoming packets, your ExpWave applies data filters. Packets are processed depending upon whether a match is found. The following sections describe how to configure filter sets.

9.1.1 The Filter Structure of the ExpWave

A filter set consists of one or more filter rules. Usually, you would group related rules, e.g., all the rules for NetBIOS, into a single set and give it a descriptive name. The ExpWave allows you to configure up to twelve filter sets with six rules in each set, for a total of 72 filter rules in the system. You cannot mix device filter rules and protocol filter rules within the same set. You can apply up to four filter sets to a particular port to block multiple types of packets. With each filter set having up to six rules, you can have a maximum of 24 rules active for a single port. See Figure 9-1 Filter Rule Process for the logic flow when executing an IP filter.

Start

Fetch Next

Filter Set

Yes

Next Filter Set

Available?

Filter Set

Fetch Next

Filter Rule

Yes

Next filter

NoRule No Available?

Packet into filter

Fetch First Filter Set

Fetch First Filter Rule

Active?

Yes

No

Drop Packet

Execute

Filter Rule

Check

Next

Rule

Forward

Drop

Accept Packet

Figure 9-1 Filter Rule Process

Filter Setup

9-1

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ZyXEL Communications 240B manual Filter Setup Configuration, About Filtering, Filter Structure of the ExpWave
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240B specifications

ZyXEL Communications has long been a prominent player in the networking equipment industry, and the ZyXEL 240B modem exemplifies the company's commitment to delivering reliable and efficient solutions for both home and business users. The ZyXEL 240B is a high-performance DSL modem designed to provide stable internet connectivity while supporting advanced telecommunications technologies.

One of the standout features of the ZyXEL 240B is its compliance with the latest ADSL2+ and VDSL2 standards, ensuring that users can take advantage of high-speed internet connections. With download speeds reaching up to 100 Mbps and upload speeds of 50 Mbps, the 240B is well-suited for streaming, online gaming, and other bandwidth-intensive activities.

The modem comes equipped with a robust Wi-Fi module that supports dual-band connectivity, allowing devices to connect securely over both the 2.4 GHz and 5 GHz frequency bands. This dual-band feature enhances the overall network performance by reducing interference and improving data throughput for multiple devices operating simultaneously. Moreover, the ZyXEL 240B supports the latest Wi-Fi standards, including 802.11ac, ensuring compatibility with a vast range of Wi-Fi-enabled devices.

Security is a top priority for ZyXEL, and the 240B is equipped with advanced encryption protocols such as WPA3, ensuring that users' data remains protected from unauthorized access. The modem also features integrated firewall capabilities, providing an additional layer of security against potential cyber threats and intrusions.

The ZyXEL 240B is designed for easy setup and management. With a user-friendly web interface, users can quickly configure their network settings, monitor connected devices, and troubleshoot potential connectivity issues. Additionally, the modem supports TR-069, allowing service providers to remotely manage and maintain the device, significantly enhancing user experience.

In terms of hardware characteristics, the ZyXEL 240B boasts multiple Ethernet ports, enabling users to connect wired devices for a more stable internet connection. The modem's compact design also makes it an ideal addition to any home or office environment without taking up excessive space.

Overall, the ZyXEL 240B modem is a reliable choice for anyone in need of a high-speed internet solution, offering robust features, enhanced security, and seamless connectivity for all digital needs.
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