7-10 Reference Guide

Parts of a filter

A filter consists of criteria based on packet attributes. A typical filter can match a packet on any one of the following attributes:

The source IP address (where the packet was sent from)

The destination IP address (where the packet is going)

The type of higher-layer Internet protocol the packet is carrying, such as TCP or UDP

Port numbers

A filter can also match a packet’s port number attributes, but only if the filter’s protocol type is set to TCP or UDP, since only those protocols use port numbers. The filter can be configured to match the following:

The source port number (the port on the sending host that originated the packet)

The destination port number (the port on the receiving host that the packet is destined for)

By matching on a port number, a filter can be applied to selected TCP or UDP services, such as Telnet, FTP, and World Wide Web. The tables below show a few common services and their associated port numbers..

Internet service

TCP port

Internet service

TCP port

 

 

 

 

 

 

 

 

FTP

20/21

Finger

79

 

 

 

 

Telnet

23

World Wide Web

80

 

 

 

 

SMTP (mail)

25

News

144

 

 

 

 

Gopher

70

rlogin

513

 

 

 

 

Page 152
Image 152
Netopia PN Series manual Reference Guide Parts of a filter, Port numbers

PN Series specifications

Netopia PN Series is a line of high-performance, user-friendly networking devices designed to meet the demands of modern digital environments. These devices are engineered for seamless connectivity, robust security, and high-speed data transmission, making them an ideal choice for both residential and commercial applications.

One of the standout features of the Netopia PN Series is its support for dual-band Wi-Fi technology. By operating on both 2.4 GHz and 5 GHz frequencies, these devices provide users with enhanced flexibility and connectivity options. The dual-band capability reduces interference and congestion, enabling devices to connect more reliably and providing faster speeds for data-intensive activities like streaming, gaming, and video conferencing.

The PN Series also comes equipped with advanced security protocols to protect users' data and networks. With support for WPA3 encryption and built-in firewalls, the devices ensure a secure connection, safeguarding against unauthorized access and various cyber threats. Additionally, the Netopia PN Series supports guest networks, allowing visitors to connect without compromising the integrity of the primary network.

In terms of technology, the PN Series utilizes advanced mesh networking capabilities, allowing multiple devices to work together to create a unified and expansive Wi-Fi coverage area. This technology significantly reduces dead zones and enhances overall performance, making it an excellent choice for larger homes and commercial spaces where traditional routers may struggle to provide adequate coverage.

Moreover, the Netopia PN Series features intelligent bandwidth management, which allocates network resources efficiently based on user needs and device demands. This dynamic allocation maximizes connectivity performance and enhances the user experience, ensuring smooth operation even under heavy network loads.

The devices come with a user-friendly interface that allows for easy setup and management. Users can quickly configure settings through a mobile app or web portal, making it accessible for individuals with varying levels of technical expertise. Furthermore, the PN Series supports software updates and feature enhancements, ensuring that the devices remain up-to-date with the latest advancements in networking technology.

In conclusion, the Netopia PN Series stands out for its combination of dual-band capabilities, advanced security, mesh networking technologies, and user-friendly management. These characteristics make it an excellent choice for anyone looking to enhance their connectivity experience in today’s digital age. Whether for home use or business solutions, the Netopia PN Series provides reliable and robust networking performance.