How to Create a Local Area Network via Wi-Fi: A Step-by-Step Guide

Creating a local area network (LAN) via a wireless Wi-Fi connection is the most effective way to connect home computers, laptops, and even smartphones for fast data exchange. Unlike wired connections, wireless technology allows you to add new devices to the network instantly, without the need to run additional wires throughout your home. This is especially important for laptop and tablet owners who value mobility and freedom of movement within the signal coverage area.

Modern routers While routers and operating systems make the setup process as simple as possible, there are a number of nuances that beginners often overlook. An incorrectly configured network profile or a port blocked by a firewall can ruin all your efforts, rendering computers "invisible" to each other. In this article, we'll take a detailed look at how to avoid common mistakes and set up stable file sharing.

Before you begin software configuration, you need to ensure that the connection is physically accessible. All devices you plan to connect must be connected to the same network. routerIt doesn't matter whether you're using a home access point or a corporate server, the main thing is that the IP addresses of all participants are on the same subnet. If one device is connected via cable and the other via Wi-Fi to the same router, they are already on the same network; all that remains is to allow them to "see" each other.

The foundation of any local network is a proper connection to the router. The router acts as a manager, distributing IP addresses among all connected devices. If you haven't configured the router yet, creating a local network between computers will be impossible, as there will be no one to assign addresses.

To get started, you'll need to log into your device's web interface. Typically, this involves opening a browser and entering the gateway's IP address in the address bar. Most often, this is 192.168.0.1 or 192.168.1.1, however, the exact address is always indicated on a sticker on the bottom of the router. After entering the address, the system will ask for a login and password, which by default is often a combination admin/admin, if you haven't changed them before.

Within the interface, we are interested in the section responsible for the wireless network. It may be called Wireless, Wi-Fi or Wireless modeHere it is important to check whether the SSID (network name) broadcast function is enabled and whether a strong password is set. Security The security of your local network depends directly on the complexity of this password, as anyone who connects to your Wi-Fi will theoretically have access to shared resources unless additional restrictions are set up.

⚠️ Warning: If you're in a public place (cafe, airport, hotel), creating a local network via Wi-Fi is highly discouraged. Network profiles in such places are often marked as "Public," which blocks your computer's visibility to other devices to protect against hacker attacks.

After checking your router settings, make sure all your devices are successfully connected to the Wi-Fi network. On your computer, the wireless network icon should appear in the system tray (near the clock) with a full or partial signal strength. If the connection is established, you can proceed to the operating system settings, which by default often blocks detection from other PCs.

The Windows operating system is configured for maximum security by default, which often hinders work on a home network. For computers to "see" each other, you need to change the network profile from "Public" to "Private." This tells the system that you are in a trusted environment and allows data exchange.

Open Settings from the Start menu and go to Network & Internet. Select Wi-Fi from the list on the left, then click the name of your connected network. In the menu that opens, find the network profile switch and set the value PrivateThis will open ports to allow discovery of devices and files on the local network.

Next, you need to configure sharing settings. To do this, go to "Network and Sharing Center" in the Control Panel and select "Change advanced sharing settings." Here, you should enable the following options:

• 🔍 Turn on network discovery - allows your computer to see and be visible to other PCs.
• 📂 Enable file and printer sharing — allows other network users to use resources.
• 🔐 Use 128-bit encryption - ensures the protection of transmitted data (recommended for WPA2/WPA3).

It's also important to pay attention to the "All Networks" section in the same menu. There's a setting called "Password-protected sharing." If you disable this feature, anyone who connects to your Wi-Fi will be able to access your shared folders without entering a username and password. This is acceptable for a home network with a strong Wi-Fi password, but for an office, it's best to leave it enabled.

Setting up shared folders is a key step, the very reason a local network is created. You can share (make public) any folder on your hard drive, be it a movie collection, work documents, or software installation files. There are two main ways to do this: quick and advanced.

The quickest way involves using the default "Public" folder. Files placed there are automatically accessible to all network users. However, for more flexible access control, it's better to manually share a custom folder. Right-click the desired folder, select "Properties," and then go to the "Sharing" tab.

Click the "Advanced Settings" button and check the "Share this folder" box. Below, you can configure permissions for different user groups. Click the "Permissions" button, select the "Everyone" group (or a specific user), and select the desired permissions: "Read," "Modify," or "Full Control." Be careful with the last option, as it allows other users to delete files from your folder.

In corporate environments or homes with a large number of devices, static IP addresses for printers and servers are often required. Dynamic address assignment (DHCP) is convenient, but a device's address can change after a router reboot, which can disrupt connection settings on computers. Assigning an address to a device solves this problem.

To do this, we'll go back to the router settings. Find the section LAN or DHCP Server and the "Client List" table. This displays all connected devices with their MAC addresses. Find your computer or printer in the list, copy its MAC address, and enter the desired IP address in the corresponding field (e.g., 192.168.1.50). Save the settings and reboot the router.

Now, even after a reboot, your device will always receive the same address. This is critical for setting up network printers or port forwarding, where changing the IP address will result in connection loss. In Windows, you can also manually assign a static IP address through the protocol properties. IPv4, but this must be done carefully to avoid address conflicts.

⚠️ Note: Router interfaces from different manufacturers (TP-Link, ASUS, Keenetic, MikroTik) may vary significantly. The location of the "Static DHCP" or "IP by MAC Binding" menu items varies. If you can't find the setting, consult the official documentation for your model.

Even with proper configuration, users often encounter situations where computers can't see each other. The most common cause is an antivirus or Windows Firewall. These can block incoming connections, deeming them suspicious, even if the network is marked as private.

To diagnose the issue, try running the ping command. Open the command prompt (press Win + R, enter cmd and press Enter). Enter the command ping 192.168.1.X, where X is the address of the computer you're searching for. If you see the response "Reply from...," then there's a physical connection and the problem is in the access settings. If you see "Timeout exceeded," then the connection is being blocked at the network or driver level.

It is also worth checking the service's operation. Workstation And Server. Click Win + R, enter services.msc and find these services in the list. They should be running. If a service is stopped, double-clicking it will change the startup type to "Automatic" and start it. Restarting these services often immediately resolves the issue with computers not appearing in Network Neighborhood.

Creating a local network via Wi-Fi opens up vast multimedia and productivity opportunities. You can stream video from your laptop directly to your TV using DLNA technology or play online games with friends in different rooms. Modern Smart TVs allow you to connect to shared folders on your computer and play content directly, bypassing flash drives and external hard drives.

For game console owners, a local area network is also useful. It allows you to use your PC as a media server or quickly transfer screenshots and game videos to your computer for editing. Furthermore, the network can be used to remotely access the desktop of another computer in the house, which is convenient for helping family members or managing a home server.

Don't forget about network printing. By connecting the printer to a single computer or directly to the router (if it supports USB printers), you can print documents from any device in the house. This eliminates the need to constantly switch cables or transfer files to a flash drive. Data transfer speeds are up to modern standards. Wi-Fi 5 (AC) or Wi-Fi 6 (AX) It is quite sufficient for comfortable work with large files.