802.11 b serial

Radio Characteristics. Transmission rate over the air. Wi-Fi Certified ID. RF Transceiver. Airoha ALS. LED lndicators. WLAN status. Power indicator. Leave Message. Consult now Technical Support. Din Rail Serial to Ethernet Simple and reliable din-rail serial to Ethernet converters, suitable for indoor and outdoor applications. Din Rail Serial to Ethernet Converters Simple and reliable serial to Ethernet Converters are suitable for indoor and outdoor applications.

I IoT Modules IOT modules can realize the transmission and reception of wireless data between things, link the perception layer and the network layer of the IoT. Figure 1. Wired Infrastructure Network Configuration. A simpler wired network configuration shown below dispenses with the server and only consists of computers and other networked devices connected via their Ethernet interfaces through the hub or switch.

This configuration is called wired peer to peer network. Figure 2. Peer to Peer Configuration. To give either of these existing networks wireless capability, connect a wireless access point AP to the network switch as shown in figure below.

Laptop or desktop computers equipped with wireless cards, or other wireless devices such as wireless serial servers, communicate with each other and the wired network via the AP. Wireless devices connect to the switch as if they are connected via a normal network cable. A major benefit to adding the wireless segment is that you can avoid running new cables. Another is that you can add up to 32 wireless computer users without having to buy a bigger switch with more ports.

Figure 3. Infrastructure Wireless Network. Wireless devices also can be set up as a peer to peer, or Ad Hoc, network configuration, as shown below. Figure 4. Adhoc Wireless Network. WLANs have a flexible architecture. You can easily extend the range and allow seamless roaming between APs. The preferred setup method for roaming within the office environment is to install multiple APs with the same Service Set Identifier SSID and security settings, however with each on a unique channel.

You can spread out the APs in an overlapping channel layout as shown below:. Figure 5. Extending Range. Like installing locks and keys on a door to control entry, wireless LAN security is designed to control which users can access the wireless LAN.

The following table provides a summary of various WLAN security protocols and techniques. Default security values are built-in and, in most cases, the AP implements these values on power up. However, you may want to make changes.

Typically the following three parameters are configurable:. WEP was the only encryption available on early Although simple to implement, WEP is easily hacked. These measures will stop unwanted traffic from accidental intrusion and casual hackers, but are not sufficient for sensitive data or mission-critical networks.

LEAP is a proprietary authentication solution that is based on The standard was developed by Cisco and, although implementation is simple, it shares some weaknesses with WEP and should not be used if high security is required for your configuration.

LEAP helps eliminate security vulnerabilities through the use of the following techniques. To create the secure channel between client and authentication server, the PEAP client first authenticates the PEAP authentication server using digital certificate authentication. When the secure TLS channel has been established, you can select any standard EAP-based user authentication scheme for use within the channel. After the user is successfully authenticated, dynamically generated keying material is supplied by the authentication server to the wireless AP.

From this keying material, the AP creates new encryption keys for data protection. It enhances WEP by adding a per-packet key mixing function, a message integrity check and a re-keying mechanism. WPA was introduced as a subset of the WPA dynamically generates keys and removes the predictability that intruders rely on to exploit the WEP key. The authentication method used depends on whether Personal Mode or Enterprise Mode is being implemented. Encryption is the same in both modes.

AES satisfies U. Serial Accessories. Heavy Duty Vehicle Converters. USB 3. USB 2. USB Isolators. USB to Serial Adapters. USB Over Ethernet. USB Extenders. Embedded Automation Computers.

Ethernet Media Converters. IoT and Network Edge Products. Serial Connectivity. USB Connectivity. Factory Automation. Monitor and Control. OEM Equipment. Petroleum, Oil and Gas. Remote Power. Data Solutions. Traffic Signaling Systems. Digital Signage. Intelligent Parking. Enterprise Systems. POS Processing. Retail and Banking. Cameras and Surveillance. Facility Access. Security Systems.