How to access another computer via Wi-Fi

The modern world dictates its own rules, and there is often an urgent need to manage data or run processes on a remote machine while being in another room or even city. The opportunity access another computer via Wi-Fi Wireless networking has ceased to be the preserve of system administrators and has become a daily task for ordinary users. Whether it's helping relatives set up a system or needing to retrieve a forgotten document from a work laptop, wireless technologies make it possible to resolve these issues instantly.

However, despite its apparent simplicity, connecting two devices has its own nuances, depending on the operating system, whether you have administrator rights, and the router configuration. Many users encounter difficulties when devices simply "don't see" each other on the local network, or when the connection is blocked by a firewall. Understanding the principles of local networks and remote desktops is the key to successfully managing devices without unnecessary wires.

In this article, we'll take a detailed look at all the current methods for remote access, from built-in Windows tools to third-party applications. You'll learn how to set up a secure connection, which ports need to be open, and how to avoid common mistakes when synchronizing devices. The main thing to remember is that data security comes first, so using strong passwords and trusted software is essential.

Basic principles of remote access in a local network

Before you begin configuring programs, you need to understand the physical and logical connections between devices. For one computer to control another, both devices must be in the same local network (LAN) created by your Wi-Fi router. This means they receive IP addresses from the same subnet, allowing them to exchange data packets directly, bypassing the ISP's external servers.

Each device on the network is assigned a unique identifier—an IP address. It is this address (e.g., 192.168.1.5) that your laptop uses to locate the target computer and transmit control commands. If the addresses are in different ranges, a direct connection over the local network will be impossible without complex routing.

Another critical aspect is the network profile the operating system selects when you first connect to Wi-Fi. If the network is marked as "Public," Windows blocks most discovery and sharing features to protect against hackers in cafes or airports. For remote control to work, you must switch the profile to "Private" or "Home."

There are two main connection types: direct (P2P) and indirect (via a cloud server). A direct connection is faster because data is transferred directly between devices via Wi-Fi, but requires proper port configuration. A cloud connection goes through the software developer's servers, which simplifies setup but can be slower due to traffic encryption and server load.

⚠️ Important: Make sure "Network Discovery" is enabled on both devices. Without it, the computers may be physically connected to the same router, but will software-based ignore each other's requests.

It's important to understand the difference between file access and full remote control. The former only allows you to copy documents, while the latter provides full control over the cursor and programs. Full control often requires higher access rights and special video streaming protocols.

Preparing Windows for a remote connection

The Windows operating system has built-in mechanisms for remote work, but they are often disabled by default for security reasons. The first step should always be checking your sharing settings. Go to Control Panel and find the section responsible for network settings.

In the "Network & Internet Settings" menu, select "Advanced Sharing Settings." Here, you need to enable network discovery and file and printer sharing. Without these settings, any connection attempts will fail with a timeout error.

The next step is setting up the remote desktop itself. To do this, go to "System" and find "Remote Desktop." Toggle the slider to "On." The system will warn you that an account with a password is required to connect.

If the target computer uses a passwordless logon (a local account with a blank password), standard Windows features may block the connection. In this case, you must either set a password or change security policies via the registry or group policies to allow logon with blank passwords (which is not recommended for security reasons).

Don't forget to check your Windows Defender Firewall settings. It should allow incoming connections for the Remote Desktop app. The system usually does this automatically when you enable the feature, but third-party antivirus software may block ports.

Using the built-in RDP (Remote Desktop Protocol) tool

RDP is the gold standard for remote control in Windows, developed by Microsoft itself. It provides high-speed video and audio transfer and supports the redirection of local resources such as the clipboard or printers.

To connect, you'll need to know the IP address of the target computer. You can find it by opening a command prompt on the remote machine and entering the command ipconfigLook for the "IPv4 address" line. You can also use the computer name displayed in the system properties.

On the client device (the one you're controlling), launch the Remote Desktop Connection application. Enter the IP address or computer name in the "Computer" field. When prompted, enter the username and password for the remote machine's user account.

The first time you connect, the system will display a certificate warning. This is normal, as the certificate is self-signed. Agree to the risks and click "Connect." If all network settings are correct, you will see the remote PC's desktop.