Router and LAN
A router is a device that connects multiple devices to form a LAN (Local Area Network) and connect them to the internet. It acts as the link between the home network (LAN) and the internet. A router typically has multiple Ethernet ports, and Wi-Fi connectivity to enable wired or wireless connectivity to the internet.
The router is the central communication hub for all the devices on the network. It creates a local IP address for each device connected to the LAN, which allows each device to communicate with the others using the router/modem for internet access. The router assigns IP addresses through a protocol known as DHCP (Dynamic Host Configuration Protocol). It also contains firewall rules that block unauthorized traffic and provide security.
The LAN generally consists of computers, printers, smartphones, and tablets, all connected by Ethernet cables or Wi-Fi. The router allows for easy file sharing and communication between these devices. By using a LAN with a router, devices can share a single internet connection and create a secure network that is separate from other networks, making it less prone to security breaches.
It is advisable to keep wireless security protocols like WEP, WPA, and WPA2 up to date to prevent unauthorized access. Additionally, keeping the router firmware/software regularly updated is also a best practice to improve performance and ensure security. A well-maintained router and LAN can provide an efficient and secure connection to the internet for various devices at home or work.