Slow internet speeds or unstable home networks often baffle router owners. You pay for a high-speed plan, but video is lagging and pages are taking a long time to load. In most cases, the cause is an unauthorized device that has surreptitiously connected to your wireless network.
For equipment owners TP-Link You don't need to be a network engineer to audit your connections. Modern router management interfaces allow you to see a complete picture of what's happening in the air in just a few clicks. Access control - this is the first step towards security and stability.
In this article, we'll explore all available monitoring methods: from classic browser login to using a mobile app. You'll learn how to distinguish your devices from others and block uninvited users, regaining full control over your traffic.
Using the TP-Link Tether mobile app
The fastest and most modern way to check who is using your Wi-Fi is with the official app TP-Link TetherIt's available for iOS and Android and allows you to manage your router settings directly from your smartphone, even when you're away from home (provided you've configured cloud functionality correctly).
After installing the app and linking your TP-Link ID account, a schematic representation of your network appears on the main screen. At the bottom of the interface is a section Clients (Clients). Clicking on it will display a list of all active connections, broken down by wired (LAN) and wireless (Wi-Fi) devices.
The advantage of the mobile method is its clarity. The app often pulls up device names (for example, "iPhone 12" or "Samsung TV"), making identification easier. If you see a device labeled "Unknown" or with an unusual MAC address, you can block it with a single tap.
It's worth noting that the app's functionality may vary slightly depending on the router model. For older models of the series Archer C50 or TL-WR740N The interface will be simpler than for the new Wi-Fi 6 series routers Archer AX.
Checking connections via the web interface (browser)
The classic method works on any computer or laptop with access to the router's network. To log in, open any browser and enter the gateway IP address in the address bar. By default, TP-Link This 192.168.0.1 or 192.168.1.1, as well as the domain tplinkwifi.net.
After logging in (the default login and password are often found on a sticker on the bottom of the router, unless you've changed them), the interface will display a network map. In newer firmware versions (green interface), go to the "Network" section. Main menu (Basic) -> Network map (Network Map). The number of connected clients will be displayed there.
In older versions of the interface (orange or blue design), the path may be different. Usually, this section Wireless (Wireless mode) -> Wireless Statistics (Wireless Statistics) - This displays a table with the MAC addresses of all active connections.
⚠️ Attention: The web configurator interface varies depending on the firmware version. If you can't find the options described, check the user manual for your specific model, as the menu name may differ.
The web interface provides more detailed information than the app. Here you can see not only the connection status, but also the connection time, signal quality for each client, and the encryption protocol used.
☑️ Network security check
Data Decryption: MAC Addresses and Device Names
When analyzing the connection list, you will come across technical designations. The most important identifier is MAC addressThis is a unique code assigned to the network adapter during manufacturing. It appears as a set of six pairs of hexadecimal characters (for example, A4:5E:60:C2:1F:09).
The router gets the device's hostname from the device itself. However, instead of the user-friendly name "Laptop-Ivan," it often displays "Unknown" or a string of characters. This doesn't mean the device is malicious; it's simply not broadcasting its hostname to the network or the router can't recognize it.
To identify the device behind a MAC address, you can use online services that search for the manufacturer by the first three pairs of characters (OUI lookup). This will help you determine whether the device is a Samsung smartphone, an NVIDIA graphics card, or a Xiaomi network camera.
Below is a table of typical designations that may be found in the client list:
| Device type | MAC Prefix Characteristic | Common name (Hostname) | Status |
|---|---|---|---|
| Apple smartphone | Apple, Inc. | iPhone, iPad | Safely |
| Windows laptop | Intel, Realtek | DESKTOP-XXXX | Safely |
| Smart socket | Espressif, Tuya | SmartLife, Socket | Safe (IoT) |
| Unknown gadget | Any | Unknown, Android | Needs verification |
What is MAC filtering?
This is a security feature that allows connections only to devices with specific MAC addresses. Even if someone knows the Wi-Fi password, they won't be able to connect unless their address is whitelisted on the router.
How to distinguish your device from someone else's
The hardest part of the audit is figuring out which devices on the list are yours and which aren't. If you have 10-15 gadgets in your home (TVs, phones, tablets, smart lamps), it's easy to get confused. The best approach is by elimination.
Start by disabling Wi-Fi on all your devices one by one. Go to the router's client list and see which device has disappeared from the list or switched to "Offline" status. Record its MAC address and mark it as "your own." Repeat this process for each device.
Pay attention to data transfer activity. The web interface often has columns Sent Packets (Packets sent) and Received Packets (Packets received). If you see a device actively downloading data while all your other devices are asleep or turned off, this is a warning sign.
It's also worth considering the connection time. If the device comes online at 3 a.m., when everyone in the family is asleep, and it's not a smart alarm clock or camera, it's worth taking a closer look.
⚠️ Attention: Some smart home apps may use their own network adapters, which appear as separate devices. Don't rush to block unknown gadgets until you're sure they're not part of your ecosystem.
Blocking unwanted devices and changing passwords
If you identify an offender, you must block them immediately. In the app Tether Simply click on the device name and toggle the "Block" switch. In the web interface, this is done through the "Block" section. Wireless -> Wireless MAC Filtering (MAC address filtering).
However, simply blocking your password is a half-measure. If an attacker already knows your password, they can try to connect again or use brute-force attacks. The most reliable way to protect yourself is to completely change your Wi-Fi network password.
To change your password, go to Wireless -> Wireless SecuritySelect the encryption type. WPA2-PSK (or WPA3, if supported) and set a complex password containing mixed-case letters and numbers. After changing the password, all devices will be disconnected, and you'll need to re-enter the new key on each one.
Don't forget to also change the password for accessing the router settings (admin panel). Default passwords are like admin/admin are known to all hackers and allow you to not only connect to Wi-Fi, but also completely reconfigure your router.
Additional measures to protect your home network
Monitoring the device list is a reactive measure. To prevent the "neighbors" problem from recurring, you need to set up proactive protection. First, disable this feature. WPS (Wi-Fi Protected Setup). It allows connection via a button or PIN code, but has vulnerabilities that make the network easy to hack.
Use a guest network. If you have friends over, give them access to your guest Wi-Fi. This isolates their devices from your main network, where your computers with important data and printers are located.
Update your router firmware regularly. Manufacturers TP-Link release updates that patch security holes. You can check for updates in the section System Tools -> Firmware Upgrade.
Remember that perfect security doesn't exist, but a comprehensive approach makes your network unattractive to casual hackers. Regularly monitoring your client list will help you stay on top of the situation.
Can my neighbor steal my Wi-Fi if I have a strong password?
In theory, complex WPA2/WPA3 passwords are extremely difficult to crack by brute-force. However, if a neighbor uses social engineering or you have vulnerabilities in WPS, access is possible. The password could also have been compromised through another device.
Why does the list of devices show more clients than I have gadgets?
This may be due to the fact that some devices (such as smartphones) create two connections: one for the 2.4 GHz frequency and one for the 5 GHz frequency. IoT devices (light bulbs, power outlets) may also have separate connections that you may have forgotten about.
What happens if I block a device by MAC address?
The router will stop transmitting any data to the device. It will still see the network and may even attempt to connect, but it won't receive an IP address and won't be able to access the internet. To the device owner, this will appear as "Connected, no internet access."
How often should I change my Wi-Fi password?
It is recommended to change your password every 3-6 months, or immediately after you stop trusting someone who previously had access (for example, after a party or tenants leave).