The meaning behind the lights on your modem may change based on which brand of modem you’re using, but in general, these rules apply to modem lights: LAN: You want a flashing (or blinking) green light here. That means there’s internet traffic on your network. DSL: If your modem has a DSL light, you want it to be a steady green light. If it’s blinking, that could mean you’re having trouble connecting to the internet or your modem is searching for a connection. If it’s red, call your internet provider. Power: You want your power light to be a solid green light. If it’s unlit or orange, your modem may be malfunctioning, and you should call your provider. Ethernet: If the Ethernet light is solid green, your modem knows you’ve connected it to a router or computer. If it’s off, your modem can’t detect your router or computer, and you should check that your Ethernet cable is plugged in all the way. Wireless: If you’ve set up your wireless network correctly, the wireless light on your modem will be a solid green or a flashing green light. If it’s off or orange, you may not have set up your wireless network correctly, or your Wi-Fi is disabled.