Universal Plug and Play (UPnP)

The following are issues that can arise when using NAT:

•Some network applications assume the IP address and port that the client has been assigned are global routable values that can be used on the Internet directly. Often, this is not the case as the client has been assigned a private IP address that can only be used on the LAN.

•Other network applications send requests using a socket on a port “A” and expect to receive the reply from a different listening socket on port “Z”. When the NAT access point creates a port mapping for port “A”, it won't know that it has to match it with the reply packets addressed to port “Z”.

•A number of network protocols assume they will always be able to use certain globally routable well-known ports. However there are several clients in the LAN and at any given time, only one client can be allowed to use a specific well-known port. In the meantime, the other clients will not be able to run any web service requiring the same well-known port.

NAT traversal techniques have been developed as a workaround to allow network-aware applications to discover that they are behind a NAT-enabled device, to learn the external, globally-routable IP address and to configure port mappings to automatically forward packets from the external port of the NAT to the internal port used by the application

– without the user having to manually configure port mapping.

NAT traversal relies on the discovery and control protocols that are part of the Universal Plug and Play (UPnP) architecture. The UPnP specification is based on TCP/IP and Internet protocols that let devices discover the presence and services offered by other UPnP devices in the network. It also supports the following, which are essential for NAT traversal:

•Learning public IP address

•Enumerating existing port mappings

•Adding and removing port mappings

•Assigning lease times to mappings

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Compex Technologies 18A manual Universal Plug and Play UPnP
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18A specifications

Compex Technologies has made significant strides in the world of wireless communication with its innovative 18A model, a device that integrates advanced technologies and user-centric features to meet the demands of modern connectivity. The 18A is designed for flexibility and scalability, making it suitable for various applications ranging from enterprise networks to residential needs.

One of the standout features of the Compex Technologies 18A is its dual-band capabilities, operating efficiently on both the 2.4GHz and 5GHz frequency bands. This allows for increased performance and reduced interference, enabling users to enjoy a seamless internet experience. The device employs the latest Wi-Fi 6 technology, which enhances speed, capacity, and efficiency, facilitating up to four times greater capacity compared to previous generations.

Moreover, the Compex 18A supports MU-MIMO (Multi-User Multiple Input Multiple Output) technology. This feature allows multiple devices to connect and communicate with the access point simultaneously, significantly improving the overall user experience in environments with many connected devices. High-density areas, such as offices or public venues, benefit immensely from this capability, as it minimizes latency and ensures smooth data transmission.

Another noteworthy characteristic of the Compex 18A is its robust security features. It incorporates advanced encryption protocols and customizable access settings, giving users peace of mind about their data privacy. The device supports both WPA3 and traditional WPA2 security standards, ensuring protection against potential threats.

The device's design also reflects Compex Technologies' commitment to user-friendliness. With an intuitive web interface, users can easily manage network settings and monitor performance metrics. The LED indicators provide real-time feedback on connectivity status and signal strength, making troubleshooting straightforward.

In summary, the Compex Technologies 18A stands out for its cutting-edge features, including dual-band support, Wi-Fi 6 technology, MU-MIMO capabilities, and strong security protocols. Ideal for both home and enterprise use, the 18A ensures optimal performance, reliability, and a user-friendly experience. This combination of technologies makes it a compelling solution for anyone looking to enhance their wireless connectivity.
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