Setting up a local area network in a modern apartment or small office is no longer the domain of system administrators and has become a completely accessible task for any experienced user. Creating a unified information space allows for instant file sharing between computers, streaming multimedia to TVs, and using shared resources such as printers or network storage. The foundation of such an infrastructure is most often wireless router, which takes on the role of traffic manager and IP address distributor.
Benefits of construction LAN (Local Area Network) are obvious: you no longer have to schlep flash drives from one device to another or use cloud services with limited download speeds. All information circulates within your perimeter at the maximum speed supported by your router and client adapters. However, despite its apparent simplicity, the setup process requires an understanding of the basic operating principles. TCP/IP protocols and correct equipment configuration.
In this article, we'll cover every step of setting up a local area network, from selecting hardware to fine-tuning access rights in the operating system. You'll learn how to avoid common mistakes that prevent computers from "seeing" each other and how to secure your network from unauthorized access. A properly configured network is the foundation for a smart home and efficient work.
Selecting equipment and preparing for network setup
The first step to creating a stable local network is to evaluate your existing equipment. The central element of a star topology, which is most common in homes, is the Wi-Fi router. To ensure high data transfer speeds within the network, it is advisable for the router to support the standard 802.11ac (Wi-Fi 5) or newer, and also had gigabit ports LANOlder models with Fast Ethernet ports (100 Mbps) will become a bottleneck, limiting file sharing speed even with a fast internet connection.
Client devices connecting to the network must also meet certain requirements. If you plan to transfer large amounts of data, such as editing video directly from a network drive or watching 4K content, using a wired connection for desktop PCs and TVs is preferable to a wireless one. Despite technological advances, Wi-Fi is still susceptible to interference and signal fluctuations, which can lead to buffering or connection breaks during peak loads.
⚠️ Important: Make sure the drivers for network cards and Wi-Fi adapters on all computers are updated to the latest versions available on the manufacturer's websites. Outdated software often causes security protocol compatibility issues.
To configure it, you'll need access to the router's web interface. This is usually accessible via the address printed on a sticker on the bottom of the device, most often at 192.168.0.1 or 192.168.1.1Before starting work, we recommend resetting your router to factory settings if you're setting it up for the first time or if the previous configuration has been changed by an unknown person. This will prevent IP address conflicts and hidden security settings.
Setting up DHCP and IP addressing on a router
The foundation of any local area network is a proper addressing system. The service is responsible for automatically assigning unique identifiers to each connected device. DHCP (Dynamic Host Configuration Protocol). Most modern routers have this feature enabled by default, but building a reliable network often requires manual adjustments to reserve permanent addresses for servers or printers.
Once you've logged into your router's control panel, find the section responsible for LAN or DHCP Server settings. Here you'll see the address range the router distributes to clients. The standard subnet mask for home networks looks like this: 255.255.255.0, which means you can connect up to 254 devices. If you plan to scale your network in the future, you can change the mask to 255.255.0.0, but for most cases the standard values are sufficient.
An important aspect is setting the lease time for the address. If you have devices on your network that need to be constantly accessible via the same IP (for example, a network printer or NAS), it's best to set it up Static DHCP (binding IP to MAC address) or manually enter a static IP in the device settings, excluding this address from the dynamic distribution range.
| Parameter | Recommended value | Description |
|---|---|---|
| IP Address | 192.168.1.1 | Gateway (router) address |
| Subnet Mask | 255.255.255.0 | Subnet mask |
| DHCP Start | 192.168.1.100 | Start of distribution range |
| DHCP End | 192.168.1.200 | End of distribution range |
| Lease Time | 1440 min (24 h) | Address rental time |
After applying the settings, the router may reboot. All connected devices will receive new IP addresses from the specified range. You can check the assigned address on a Windows computer by opening the command prompt and entering the command ipconfigMake sure the default gateway matches your router's address.
Sharing configuration in the operating system
Once the physical connection is established and IP addresses are assigned, you need to configure the software on your computers. In the Windows operating system, the network profile plays a key role. When you first connect to a new Wi-Fi network, the system will ask if you want to make your computer visible to other devices. To create a local network, select "Yes" or switch the network profile to Private network (Private).
If the profile is set to "Public Network," Windows blocks incoming connections and hides the computer from detection for security purposes. You can change this through the Network and Sharing Center. Go to Control Panel → Network and Internet → Network and Sharing Center → Change advanced sharing settingsHere you need to enable network discovery and file and printer sharing.
Pay special attention to password protection settings. If you disable password-protected access, any user on your network will be able to access shared folders without entering a username and password. This is convenient for a home network, but unsafe. If password protection is enabled, attempting to access the folder from another PC will require the username and password of the user who owns the folder on the target computer.
☑️ Setting up sharing
To access a folder from another device, you only need to know its network path. It usually looks like this: \\Computer_Name\Folder_Name or \\192.168.1.XX\Folder_NameUsing an IP address is often more reliable because it does not rely on the DNS service within the local network, which can sometimes fail.
Organizing media file sharing (DLNA and SMB)
One of the most popular tasks for a local network is organizing a media library. Instead of copying movies or music to each device, you can store them on a single powerful computer or NAS and stream them to TVs, set-top boxes, and smartphones. Protocols are used for this. SMB (Server Message Block) and DLNA (Digital Living Network Alliance).
The SMB protocol is a standard for accessing Windows file shares. It allows you to work with files on a remote computer as if they were on your local drive. DLNA, on the other hand, is geared specifically toward multimedia: it allows a TV to view the folder structure of videos and photos, sort them, and play them using a built-in player. Many modern routers have a built-in USB port, allowing you to connect an external hard drive and set up a DLNA server directly on the router, reducing the workload on your computers.
⚠️ Note: The SMB protocol has several versions. Windows 10 and 11 use SMB v2/v3 by default, while older TVs and media players may only support SMB v1. Enabling SMB v1 reduces network security, so it's best to update your TV firmware or use a separate set-top box.
To set up DLNA on a Windows computer, simply enable the "Media Server (DLNA)" service or use third-party software like Universal Media Server or PlexThese programs allow you to flexibly configure video transcoding on the fly if the file format is not supported by your TV, as well as automatically download movie covers and descriptions.
Codec issues when streaming
If the video is choppy or won't play, the problem may not be with the network, but rather with insufficient computing power to decode it. In this case, transcoding or using an external player on the TV (such as VLC or MX Player) that can access network resources directly may help.
Connecting peripheral devices and printers
A network printer is a classic example of a resource that saves time and money. Instead of buying a printer for each computer, simply connect one device to the network. If the printer has its own network interface (Wi-Fi or LAN), it connects directly to the router and becomes an independent network device. If the printer is a standard USB device, it can be connected to the router (if it has a USB port) or to one of the computers, setting up shared access on that computer.
Connecting via a router completely removes the load on computers: printing will continue even if all computers are turned off. However, drivers will still need to be installed on each computer that will use the printer. In Windows 10 and 11, the process of searching for network printers is automated: when adding a new device, the system often automatically finds printers on the local network.
To set up printing, it's important to know the printer's exact network name or IP address. If you're having problems with the drivers, you can try adding the printer manually by specifying the path. \\Router_IP_Address\Printer_Name or by creating a new print port of the type Standard TCP/IP Port and entering the IP address of the printer itself.
Diagnosing and troubleshooting connection problems
Even a perfectly configured network can occasionally experience problems. The first diagnostic tool is the utility pingIt allows you to check the node availability and response time. Open the command line and enter ping 192.168.1.1 (router address) or the address of another computer. If you see the response "Timeout exceeded" or "Specified host unavailable," there is no physical connection or the blocking is at the firewall level.
A common problem is that computers are on different networks or subnets. Make sure the first three numbers of the IP address match on all devices (e.g., 192.168).1.X). If one device has the address 192.168.0.5 and the other has 192.168.1.5, they will not see each other without configuring routing.
It's also worth checking your Windows services. The "Function Discovery Resource Publishing" and "Discovery Subsystem Library Host" services should be running. You can find them in the menu. Start → Services (or via command services.msc). Without them, the computer will not be visible in the network environment, even if access to folders via IP works.
If all else fails, try temporarily disabling your antivirus and Windows Firewall on both computers. If the network works after this, the issue lies with your security rules. You'll need to add an exception for the "Private" network type or create a rule allowing incoming connections for the "File and Printer Sharing" service.
Questions and Answers (FAQ)
Is it possible to connect computers into a local network if they are connected to different routers?
Yes, this is possible, but it requires a more complex setup. The simplest way is to connect the routers with a cable (LAN-to-LAN), disabling DHCP on the second router, turning it into a switch. A more complex option is to set up a VPN tunnel between the routers or use a program like Hamachi to create a virtual local area network over the internet.
Is it safe to share folders on a local network?
This is relatively safe within a password-protected Wi-Fi network. However, if guests can connect to your Wi-Fi, it's best to create a guest network with client isolation. It's also not recommended to allow password-protected access to the Administrator account with a blank password.
Why is the speed of file copying over the network much slower than the Internet speed?
Local network speed is limited by the weakest link: the speed of the Wi-Fi adapter, router ports (100 Mbps vs. 1 Gbps), or the hard drive's write speed. 2.4 GHz Wi-Fi rarely exceeds 30-40 MB/s in real-world conditions, while a gigabit cable can provide up to 110 MB/s.
How can I hide a computer from the general list but still be able to connect via IP?
You can change the computer's hiding setting in the Windows registry, but the easiest way is to simply disable network discovery while leaving file sharing enabled. The computer won't be visible in Network Places, but will be accessible via a direct path. IP address.