Wireless gateway

A wireless gateway serves as a bridge between a wireless local area network (WLAN) and another network, which can be wired or wireless wide area networks (WAN). It integrates functions such as those of a wireless access point, router, and often includes firewall capabilities. This device provides network address translation (NAT) to allow multiple users to share a single public IP and dynamic host configuration protocol (DHCP) for automatic IP assignment.

There are two primary types: one connects to a DSL or cable modem via the internet service provider (ISP), while the other has an integrated modem, reducing the need for additional hardware. The latter offers benefits like simplified wiring and desk space savings. These gateways typically include a wired connection to the ISP, multiple LAN ports, and antennas for wireless connectivity.

Wireless gateways support various standards, including 802.11b/g up to 56 Mbit/s, 802.11n up to 300 Mbit/s, and 802.11ac up to 1200 Mbit/s. The LAN interface may support Fast Ethernet (100 Mbit/s) or Gigabit Ethernet (1000 Mbit/s). Security features include encryption methods like WEP, WPA, and WPS, with WPA2 being the most secure when WPS is disabled.

Major brands include Motorola, Netgear, and Linksys. However, many ISPs provide gateways as part of their service plans, offering pre-configured devices and remote troubleshooting support. While this limits user choice, it ensures convenience and ease of installation.