Dear Lifehacker,
My router sucks. My connection goes wonky once every few days, and I have to unplug the router and reboot it (I believe this is called a hard reset) to fix the problem. Obviously, this is incredibly annoying. What can I do to just make the darn thing work properly?

Sincerely,
Infernal Internet

Dear Infernal,
This is a very common ailment, but there's no one universal cause (which, sadly, means there's also not one simple solution). It could be that your internet provider changes your IP address often, and your router doesn't catch on. Maybe it's overheating, or maybe it's getting bogged down by too many connections at once (which can happen if you download a lot). There isn't an easy way to figure out what the problem is, but there are a few common solutions that could help you fix the problem and prevent it from happening in the future.

First: Verify That Your Router Is the Source of the Problem

Before you start messing with your router, you should make sure the problem doesn't lie with your modem or your internet service provider. To do this, plug your computer directly into your modem and see if you get any dropped connections or other problems. If not, the problem is more likely related to your router. If your modem is a modem/router combo, you won't be able to perform this step (we recommend having a separate modem and router for just this reason). If your modem is the problem, contact either your internet service provider or the modem manufacturer to get support, since it's probably not something you can fix at home.

Today we’re taking a look at the home networking hardware: what the individual pieces do, when you need them, and how best to deploy them. Read on to get a clearer picture of what you need to optimize your home network.

When do you need a switch? A hub? What exactly does a router do? Do you need a router if you have a single computer? Network technology can be quite an arcane area of study but armed with the right terms and a general overview of how devices function on your home network you can deploy your network with confidence.

Understanding Home Networking Through Network Diagrams

Rather than start off with a glossary of networking terms—and in the process slam you with a technical terms with no easy point of reference—let’s dive right into looking at network diagrams. Here is the simplest network configuration available: a computer linked directly to a modem which is in turn linked through a phone line/cable/fiber optic uplink to the individual’s internet service provider.

Home networking is something we all have to deal with, but it can be confusing as heck. This week, we're going to turn you into a networking wizard, starting with getting to know the most important device on your network: the router.

Router Basics

Your router is the glue that holds your home network together. It connects all your computers to one another, either through Ethernet cables or a wireless connection. A router is different than a modem: your modem connects you to the internet, while your router connects your computers to one another. When you hook up your router to the modem, however, you're then able to share that internet connection with all of the computers on your network. Sometimes modems will come with routers built-in, but this isn't always the case.

Devices that connect to your router—that is, the computers, tablets, smartphones, DVRs, game systems, and so on—are called clients. Each client on the network is given an IP address, which helps your router direct traffic. Clients within the network get a local IP address, while your modem gets a global IP address. Global IP addresses are like street addresses, while local IP addresses are like apartment numbers: one lets you find the building in relation to the rest of the world, while the other lets you find the specific location within the complex. These addresses make sure the right information from the outside world gets to the right computer on your network.

Routers have a number of different features, so we'll go through some of the most common router specs and how they affect your home network.