The modern home is overflowing with digital devices that often operate in isolation from each other, although they could be much more useful when connected. local network (LAN) allows you to connect computers, laptops, smartphones, and even TVs into a single ecosystem for fast data exchange without an external internet connection. This solution is ideal for transferring large files, setting up a home media server, or collaborating on projects.
Many users mistakenly believe that this requires complex cables and professional equipment, but today, standard equipment is sufficient. Wi-Fi router and proper configuration of the software. The data transfer speed within such a network is limited only by the bandwidth of your Wi-Fi module (802.11ac or ax standards) and does not consume your provider's traffic. In this article, we'll walk you through the entire process, from preparing your hardware to setting up shared access to folders in the Windows operating system.
Before setting up, make sure all devices you plan to connect are within range of a strong signal. A wireless local area network is convenient for mobility, but requires a stable connection to comfortably work with large amounts of data. If you plan to transfer files weighing tens of gigabytes, consider a hybrid option or using a standard. Wi-Fi 6 to minimize delays.
Preparing equipment and checking router settings
The foundation of your future network is a router, which must correctly assign IP addresses to all connected devices. In most cases, routers are already configured by the factory to operate in IP mode. DHCP servers, which automatically assigns addresses to each gadget. You need to make sure Wi-Fi is enabled on all devices and they are connected to the same wireless network (SSID).
Access your router's control panel via your browser by entering the gateway's IP address in the address bar, usually 192.168.0.1 or 192.168.1.1In the device interface, find the section related to wireless network or LAN and check if "AP Isolation" or "Client Isolation" is enabled. This feature is specifically designed for hotels and cafes to prevent guests from seeing each other's devices, and it should be enabled for a home network. disabled.
⚠️ Attention: Router interfaces from different manufacturers (Keenetic, TP-Link, Asus, MikroTik) can vary significantly. If you can't find a specific setting, consult the official documentation for your model, as menu item names may vary.
It's also important to check the frequency range. Modern routers operate in two bands: 2.4 GHz and 5 GHz. To create a high-speed local network, it's preferable to use 5 GHz, as this channel is less congested with neighbors and provides higher throughput. Make sure all your devices support this standard and are connected to it to avoid bottlenecks in data transmission.
Setting up sharing in the Windows operating system
Once the physical connection is established, you need to configure the Windows software to allow file sharing. Open Control Panel and go to Network and Sharing Center. On the left, select Change advanced sharing settings. Here, you'll need to change the current network profile (private or guest) to enable networking features.
In the window that opens, find the "Private (current profile)" section and enable the following options: "Turn on network discovery," "Turn on automatic configuration of connected devices," and "Turn on file and printer sharing." These actions tell the system that you are in a trusted environment and are ready to see and be visible to other computers.
Next, scroll down to the "All Networks" section. It's crucial to enable the "Turn off password-protected sharing" option here if you don't want to enter your username and password every time you connect from another device. This simplifies access, but reduces security, so only use this method on secure home networks.
☑️ Check Windows settings
Be sure to save your changes by clicking the "Save Changes" button at the bottom of the page. Windows may then ask you to confirm changing the network type from "Public" to "Private." Accept this, as the public profile blocks many local networking features for security reasons.
Advanced configuration via registry and services
Sometimes the default settings aren't enough, and computers on the network simply can't see each other despite the correct settings. In this case, a more in-depth configuration is required through system services. Click Win + R, enter services.msc and locate the Discovery Resource Publishing service. Make sure it is running and its startup type is set to Automatic.
Another important component is SMB protocol support. In older versions of Windows or specific builds, you may need to enable the "SMB 1.0/CIFS file sharing support" component. However, SMB 1.0 is considered outdated and insecure, so try to use modern versions of the protocol (SMB 2/3), which are enabled by default in Windows 10 and 11.
⚠️ Attention: Editing the registry or disabling security services can make your system vulnerable. Only perform these actions if you understand the risks and are on an isolated home network without direct internet access.
Advanced users may need to check their firewall rules. Open Windows Firewall with Advanced Security and ensure that incoming connections are allowed for the private network for the rules related to File and Printer Sharing. Sometimes third-party antivirus software (Kaspersky, ESET, Avast) may block the local network, treating it as a public network, so check the firewall settings in your antivirus software.
What to do if the antivirus blocks the network?
If you use a third-party antivirus, its built-in firewall often takes precedence over the system's. Go to your antivirus settings, find the "Network" or "Firewall" section, and change your Wi-Fi network status from "Public" to "Trusted" or "Home." This will automatically apply rules allowing local communication.
Organizing access to folders and sharing resources
Once the network is set up, it's time to make specific files available to other participants. Select the folder you want to share, right-click it, and select "Properties." Go to the "Sharing" tab and click "Advanced Settings."
In the window that opens, check the "Share this folder" box. Below, click "Permissions" to configure user permissions. You can add the "Everyone" group and grant it "Read" (view only) or "Full Control" (read and write) permissions. For home use, granting full permissions to the "Everyone" group is usually sufficient, allowing them to record a movie or document from any device.
There's also a simpler way to share via the "Sharing" tab in the folder's properties. Select "Everyone" from the drop-down list, click "Add," and set the permission level. This method is more intuitive for beginners, but it's less flexible when it comes to fine-tuning access rights for different users.
| Permission type | Description of action | Recommended use |
|---|---|---|
| Reading | The user can only open and copy files. | For media libraries, documents, photo archives |
| Change | You can read, modify and delete files | For work folders, shared projects |
| Full access | Full control, including changing access rights | For trusted users only |
After setting the permissions, click "OK" and "Close." The folder is now marked with a shared network icon. To find it on another computer, open File Explorer, go to "Network," and find the name of your primary computer. If prompted for credentials, enter the username and password of the user on whose computer the folder is located.
Connecting mobile devices and Smart TV
A local network is especially useful for streaming content to a TV or accessing PC files from a smartphone. There are excellent file managers for Android and iOS, such as ES File Explorer, Owlfiles or FE File ExplorerIn these applications, you need to select to add a new LAN/SMB connection, and they will automatically find computers on the network.
For Smart TV owners (Samsung, LG, Sony), the process is even simpler. Most TVs have a built-in media player that automatically scans the network for DLNA servers. On a computer, you can use the built-in "Media Streaming" feature in Windows or third-party programs like Universal Media Server for more flexible customization.
If automatic search doesn't work, try entering your computer's IP address manually in the app on your TV or phone. You can find the IP address by opening the command prompt (cmd) on the PC and entering the command ipconfigThe address will be indicated in the "IPv4 address" line.
Diagnosing problems and troubleshooting connection errors
Despite careful configuration, situations may arise where devices cannot see each other. First, try running the ping command. Open the command prompt and enter ping 192.168.1.X (where X is the target device's address). If there's a response (time=...), then there's a physical connection, and the problem lies in the access settings or firewall.
A common issue is time or workgroup name desynchronization. Make sure all computers on the network are set to the same workgroup (by default). WORKGROUP). You can check this in "My Computer" -> "Properties" -> "Advanced system settings." Also, make sure the time on all devices is the same; the difference should not exceed 5 minutes for authentication protocols to function correctly.
If all else fails, try temporarily disabling your antivirus and Windows Firewall on both computers to run diagnostics. If the network works again, then the problem is definitely blocked ports. Don't forget to set up exceptions after testing to ensure your system remains protected.
⚠️ Attention: When using public Wi-Fi networks (such as cafes and airports), creating a local network is strongly discouraged. In such locations, other users may be able to access your shared files unless you disable public access profiles before leaving home.
Why can't the computer see the network but open folders?
The issue is most likely related to access rights or password protection. Check that password protection is disabled in the Network and Sharing Center, and ensure that the "Everyone" user has read/write access to the properties of the specific folder. Also, check if your antivirus software is blocking the connection.
Is it possible to create a local network without a router?
Yes, you can create a computer-to-computer (Ad-hoc) network using Wi-Fi adapters, but it's more difficult to set up and less stable. It's easier to use one of the laptops as an access point, but then it needs to be on all the time.
What is the maximum speed on a local Wi-Fi network?
Speed depends on the standard: Wi-Fi 4 (802.11n) will give you around 40-50 Mbps, Wi-Fi 5 (802.11ac) will boost speeds to 100-400 Mbps, and Wi-Fi 6 can deliver over 1 Gbps under ideal conditions, which is comparable to a gigabit cable.
Is it safe to leave sharing enabled?
This is only safe if your Wi-Fi is protected with a strong password (WPA2/WPA3) and you're within your home. If your neighbors can connect to your network, it's best to use your router's guest mode for guests, isolating them from your local network.