Organizing a local network between devices within a single apartment or office is the foundation for convenient file sharing, printer collaboration, and remote device management. When you're wondering how to connect to another computer via a Wi-Fi router, you're essentially looking for a way to establish direct digital communication without the need for external cloud storage or physical cables. This allows you to transfer gigabytes of data at the maximum speed your wireless equipment can provide.
Modern routers Automatically create the conditions for such interaction, but by default, operating systems often block external connections for security reasons. You'll need to adjust a number of settings not only on the router itself, but also in the Windows network settings on both computers. Understanding the operating principles IP addressing and data exchange protocols will help avoid typical errors when devices “don’t see” each other, despite an active connection to the same access point.
In this article, we'll cover in detail the process of setting up static addresses, configuring network profiles, and troubleshooting visibility issues. You'll learn how to create reliable communication channels that will operate reliably even with multiple other connected devices. The key is to follow all the steps consistently, paying particular attention to security settings to ensure your local perimeter remains protected from unauthorized external access.
Basic principles of a local network via Wi-Fi
Local Area Network, or LANA wireless network operates on a star-shaped principle, with the router serving as the central hub. All devices connected to it receive unique identifiers, allowing them to exchange data packets directly, bypassing the ISP's internet connection. This is why file copy speeds between a laptop and a desktop PC can reach tens of megabits per second, even if the internet speed itself is significantly lower.
The key element here is DHCP server, built into the router, which automatically assigns addresses to connected clients. However, for stable persistent connections, such as port forwarding or setting up a remote desktop, dynamically changing addresses can be a challenge. Therefore, the first step to a professional setup is often switching to static addresses. IP addresses within the local segment.
⚠️ Attention: Make sure the Wi-Fi profile settings on both computers are set to "Private" rather than "Public." By default, Windows blocks other devices from being discovered in a public profile, making it impossible to connect.
It's also important to understand the difference between the 2.4 GHz and 5 GHz frequency bands. If your router is dual-band, it's better to use the 2.4 GHz network for transferring large amounts of data. 5 GHz, as it provides higher throughput and is less susceptible to interference from neighboring networks and household appliances.
Setting up a static IP address for stability
To connect to another computer via a WiFi router without interruption, you need to fix the IP addresses of the devices. This will prevent situations where the addresses change after a router reboot, and configured paths to shared folders stop working. You can assign a static address either in the router settings (MAC address reservation) or directly in the Windows operating system.
Let's consider the configuration option via the OS interface, as it's universal. You need to open the adapter settings and manually enter the address, subnet mask, and gateway. The address must be in the same subnet as the router's address, but not the same as the addresses of other devices. Routers typically have addresses like 192.168.0.1 or 192.168.1.1, so computers can be assigned addresses in the range 192.168.0.2–254.
☑️ IP setup checklist
After assigning a static address, it's recommended to test connectivity between the devices using the ping command. Open a command prompt and enter the address of the second computer. If you see a response from the host, the physical connection and basic routing are working correctly. If you see "Timeout exceeded" errors, you should check your firewall settings.
Using static addresses is especially critical if you plan to organize media server Or use a network printer. Dynamically changing the address may prevent the TV from viewing movies on the computer, and printing documents will become impossible until the settings are reset.
Configuring Sharing in Windows
After setting up the network, you need to allow the operating system to share resources. In modern versions of Windows, this process is centralized in the Network and Sharing Center. Here, you need to enable network discovery to make your computer visible to others and enable file and printer sharing.
You don't need to share the entire drive to access specific data. Simply select the desired folder, go to its properties, and click "Advanced Settings" on the "Sharing" tab. In the window that opens, check the "Share this folder" box, after which you can fine-tune permissions for individual users or the "Everyone" group.
⚠️ Attention: When sharing with the "Everyone" group, anyone connected to your Wi-Fi network will be able to read or modify files in this folder. Use strong Windows passwords or restrict permissions to read-only if your network isn't secure.
The "Password Protection" setting deserves special attention. If enabled, when attempting to connect from another computer, the system will require the username and password of the user account on whose computer the shared folder is located. Disabling this setting simplifies access but reduces security, which is only appropriate in fully trusted home networks.
What should I do if the folder is visible but won't open?
If you see the folder but get an access error when you try to access it, check the NTFS file system permissions. Go to the folder properties → the "Security" tab and make sure the "Everyone" user or group has read and execute permissions. Often, network access permissions are present, but file system permissions are not.
Using built-in tools for remote control
Windows provides powerful tools for remote control, the main one being Remote Desktop (RDP). This technology allows you to not only access files, but also see and control the entire screen of a remote computer, as if you were sitting in front of its monitor. For RDP to work, you must enable the corresponding feature in the system properties on the target computer.
Activation occurs through the "System" → "Remote Desktop Settings" menu. Here, you need to switch the slider to the "Enabled" position.
To connect, use the Remote Desktop Connection application, specifying the computer's IP address or network name. When you first connect, the system will warn you that the publisher's certificate cannot be verified. This is normal behavior for a local network; you simply need to confirm trust.
| Function | Protocol | Default port | Requirements |
|---|---|---|---|
| File sharing | SMB | 445 | Setting folder permissions |
| Remote Desktop | RDP | 3389 | Windows Pro/Enterprise |
| Media stream | DLNA | Different | Media server |
| File transfer (FTP) | FTP/SFTP | 21/22 | FTP server |
An alternative to built-in tools is third-party programs like TeamViewer or AnyDesk, which operate over the internet. However, for a local network, these are often overkill and create unnecessary overhead. Native Windows tools are faster and don't require additional software.
Visibility Problems and Their Solutions
One of the most common problems is when computers are connected to the same network but don't see each other in the list of network devices. This is often due to disabled discovery services. In Windows 10 and 11, these services are responsible for this. Function Discovery Resource Publication And Function Discovery Provider Host.
To fix this, open services (command services.msc), find the specified services, set the startup type to "Automatic," and start them. After rebooting, the computers should appear in the network neighborhood. It's also worth checking that your antivirus or third-party firewall isn't blocking the connection.
If the problem persists, try resetting the network settings with the command netsh winsock reset in a command prompt running as administrator. This will clear the network protocol cache and resolve any software conflicts that may have accumulated over the system's lifetime.
Local connection security
When accessing computers via a Wi-Fi router, don't forget about security. Wireless networks travel outside your home via radio waves, so using encryption is essential. WPA2/WPA3 is a mandatory minimum. A weak Wi-Fi password will allow an attacker to connect to your network and access shared resources.
It's recommended to create a separate guest network for guests so they don't have access to the main computers and NAS storage devices. Router settings typically include a client isolation feature or a guest portal that limits device interaction within the guest area.
⚠️ Attention: Router settings interfaces and operating system versions are constantly updated. Menu locations and item names may differ from those described in the instructions. Always consult the official documentation from your equipment manufacturer.
Update your router firmware regularly. Manufacturers patch vulnerabilities that can allow outsiders to penetrate your local network. An outdated router firmware version can be an open door for hackers, even if your computers are running modern antivirus software.
Frequently Asked Questions (FAQ)
Is it possible to connect to a computer if it is on a different subnet?
By default, devices on different subnets cannot see each other without routing configuration. You'll need to configure static routes on your router or use software solutions to create a virtual private network (VPN) that will connect devices into a logical network over the physical one.
Why is the copying speed via Wi-Fi much slower than via cable?
Wireless connections are susceptible to interference and incur overhead due to encryption and the need to share airtime between devices. Furthermore, actual Wi-Fi speeds are often only 50-60% of the standard's stated theoretical speed. A cable provides a stable channel without packet loss.
How to find the IP address of another computer on the network?
On the target computer, open a command prompt and enter the command ipconfigYou're interested in the "IPv4 address" line. You can also often find the address in the router's web interface in the list of connected clients (DHCP Client List).
Does public access work if there is no internet?
Yes, the local network works regardless of internet access. As long as the router is turned on and assigning IP addresses (or they are statically assigned), file sharing and printing will function normally.