Reititin

A reititin is the Finnish term for a router, a networking device that forwards data packets between computer networks. In home and small-office networks, a reititin connects devices such as computers, phones, and smart devices to the Internet and manages traffic between the local network and external networks.

Core functions typically include Network Address Translation (NAT) to share a single public IP, a DHCP server to assign local IP addresses, and a firewall to filter traffic. Many models also function as a wireless access point, providing Wi-Fi connectivity, and include multiple Ethernet ports for wired devices. Some devices offer USB ports for storage or printer sharing, and may support features such as VPN passthrough or dynamic DNS.

Types and configurations vary. Consumer routers are often standalone devices, sometimes combining a modem and router in one (gateway). In other setups, a separate modem connects to a reititin. Enterprise routers provide higher performance and more advanced features, such as detailed traffic shaping, virtualization, and higher security options.

Wireless standards and security are common considerations. Modern reititins support Wi‑Fi based on IEEE 802.11 standards (such as 802.11ac/ax), usually in dual-band (2.4 GHz and 5 GHz) or tri-band configurations. Security uses WPA2 or WPA3, with configuration of SSIDs, passwords, and guest networks.

Administration and maintenance are important. Setup is typically via a web interface or mobile app. Default credentials should be changed, and firmware updated to address vulnerabilities. For security, enable firewall features, disable unused services, and implement strong passwords and network segmentation for IoT devices.