How to Check Who's Connected to Your Wi-Fi: All the Working Methods

Have you noticed that your internet has become slower than usual? Or do you suspect that unauthorized devices have connected to your Wi-Fi network? In this article, we'll look into the matter. All current methods for checking connected gadgets From standard router tools to specialized apps, you'll learn how to identify rogue devices, block them, and protect your network from unauthorized access.

The problem of Wi-Fi leakage is especially acute in apartment buildings, where neighbors can accidentally (or intentionally) connect to your network if it's not secure enough. Even if you're confident in the strength of your password, traffic leak This can occur through vulnerabilities in security protocols or due to errors in router settings. We'll show you how distinguish legitimate devices from foreign ones and what to do if you detect suspicious activity.

1. Checking via the router's web interface

The most reliable and universal method is to log into the router's control panel. This method works on all models (TP-Link, ASUS, Keenetic, D-Link, Zyxel, etc.), but the path to the device list may vary. You'll only need a browser and access to settings.

To open the web interface:

• 🌐 Enter in the address bar of your browser 192.168.0.1 or 192.168.1.1 (less often - 192.168.8.1). The exact address is indicated on the router sticker.
• 🔑 Enter your login and password (usually by default admin/admin or admin/empty).
• 🔍 Find the section with connected devices. It's usually called:
  • DHCP → DHCP Clients (TP-Link, Mercusys)
  • Local Network → Client List (ASUS, ROG)
  • Devices → Connected devices (Keenetic)
  • Status → Wireless (D-Link, Tenda)

In the table you will see:

⚠️ Attention: If the list contains devices with unfamiliar MAC addresses or names (for example, xiaomi-9876(If you don't have any Xiaomi devices), you should block them. But first, make sure they're not guest devices (such as a smartwatch or smart speaker).

2. Mobile apps for Wi-Fi monitoring

If it is inconvenient to access the router settings, you can use specialized applications for Android or iOSThey scan the network and display all connected devices, sometimes with additional information (manufacturer, device type).

Top 5 verified apps:

• 📱 Fing — the most popular solution with port scanning and vulnerability detection. The free version displays up to 5 devices.
• 🛡️ NetCut - allows you not only to view, but also block suspicious gadgets directly from the app.
• 🔍 WiFi Guard — compares current connections with the “white list” and notifies about new devices.
• 📊 Network Analyzer — detailed statistics for each device (speed, channel load).
• 🔗 IP Tools — a universal set of tools, including ping, traceroute and network scanner.

How to use (using example) Fing):

1. Download the app from Google Play or App Store.
2. Connect to your Wi-Fi network.
3. Click "Scan" - after 10-20 seconds a list of devices will appear.
4. Tap any device to see details: MAC address, manufacturer (based on the first 3 bytes of MAC), open ports.

⚠️ Attention: Some applications (eg NetCut) require root rights on Android to block devices. Without them, they only work in monitor mode.

Make sure it's not your gadgets (check MAC addresses)

Change your Wi-Fi password to a more complex one (at least 12 characters)

Enable MAC address filtering in your router settings.

Update your router firmware to the latest version

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3. Windows Command Prompt (for advanced users)

If you prefer to work without third-party programs, you can use built-in tools WindowsThis method is suitable for a quick check, but requires knowledge of commands.

Open command line (Win + R → enter cmd → Enter) and run the following commands:

arp -a

This command will display the ARP (Address Resolution Protocol) table, which lists all the IP and MAC addresses of devices on the local network. Note the lines with the type dynamic - these are active connections.

For more detailed information, use:

nbtstat -a [IP address]

Replace [IP address] to the address from the list arp -aThe command will show the name of the device (if it exists on the Windows network).

The utility is suitable for monitoring traffic in real time. netstat:

netstat -ano | findstr "ESTABLISHED"

This command will list all active connections. Column Foreign Address will show the external IPs with which devices on your network communicate.

4. Specialized programs for PC

For in-depth network analysis on a computer, desktop utilities are suitable. They offer more features than mobile apps and often include tools for blocking unwanted devices.

Top programs:

• 🖥️ WireShark — a professional traffic analyzer. Allows you to see all data packages, passing through the network, but requires work skills.
• 🔍 Advanced IP Scanner — scans the network and shows devices with remote control capabilities (if RDP is enabled).
• 🛡️ GlassWire — visualizes traffic by devices and applications, alerts you to suspicious activity.
• 📡 Angry IP Scanner — a fast IP address scanner with plugin support for advanced analysis.

Example of working with Advanced IP Scanner:

1. Download the program from the official website and install it.
2. Start scanning (Scan button).
3. After a few seconds, a list of devices will appear with IP, MAC, name and manufacturer.
4. Right-click on the suspicious device → “Copy MAC address” to further block it in the router.

⚠️ Attention: Programs like WireShark can slow down the network during intense scanning. Use them during periods of low activity.

How to determine the manufacturer by MAC address?

The first 3 bytes (6 characters) of a MAC address are called the OUI (Organizationally Unique Identifier) ​​and are assigned by the manufacturer. For example:

- 3C:5A:B4 — Google (Nest devices, Chromecast)

- B8:27:EB — Raspberry Pi

- 78:31:C1 — Apple

A complete list of OUIs can be found on the IEEE website or in the Fing application database.

5. Router functions: blocking and notifications

Modern routers can not only show connected devices, but also automatically block strangers or notify you of new connections. These functions have different names depending on the model:

• 🔒 MAC filtering — allows only devices from the "white list" to connect. Configurable in the section Wireless → MAC Filter.
• 🚨 New device notifications — the router sends a push notification or email when a new gadget is connected (available in Keenetic, ASUS AiProtection).
• 🛡️ Guest network — isolates guest devices from the main network, limiting access to local resources.
• ⏱️ Access schedule — limits Wi-Fi operating time for individual devices (useful for parental control).

How to set up MAC filtering using an example TP-Link:

1. Go to the router's web interface.
2. Go to Wireless → Wireless MAC Filtering.
3. Turn on filtering (Enable).
4. Select mode Allow (allow only specified MACs) or Deny (deny specified MACs).
5. Add MAC addresses of trusted devices (they can be copied from the DHCP client list).
6. Save settings (Save).

For routers ASUS with AiProtection:

• Activate the function in the section AiProtection → Devices.
• Enable the "Block unknown devices" option.
• Set up notifications in AiProtection → Notifications.

6. Traffic analysis: how to identify “parasites”

Sometimes other devices are connected but inactive, making them difficult to spot in the standard list. In this case, analysis can help. network traffic: If a device is consuming a lot of data but you don't own it, that's a clear sign of a problem.

How to check:

• 📊 In the router's web interface, find the section Traffic Monitor, Bandwidth Control or Traffic statistics.
• 📈 See which devices consume the most data. For example, in Keenetic This Monitoring → Traffic.
• 🔍 Compare this to your gadgets: if someone is downloading data at night when everyone is asleep, it's suspicious.

Case study: A user noticed that his router Xiaomi Mi Router 4 It shows 5GB of traffic overnight, even though all devices were turned off. It turns out a neighbor's smartphone was connected to the network and automatically updating apps.

To monitor traffic in real time, use:

• Programs: GlassWire (Windows/macOS), ntopng (Linux).
• Mobile applications: Data Usage Monitor (Android), Network Analyzer (iOS).

⚠️ Attention: Some devices (such as smart TVs or IP cameras) may consume data in the background. Before blocking, make sure it's not your device.

7. How to protect Wi-Fi from unauthorized connections

Finding "extra" devices is half the battle. The main thing is prevent reconnectionHere are some proven safety measures:

• 🔐 Change your Wi-Fi password:
  • Use WPA3-Personal (or WPA2-PSK, if WPA3 is not supported).
  • The password must be long 12+ characters, with letters, numbers and special characters.
  • Don't use obvious combinations (12345678, qwerty, router name).
• 🚫 Disable WPS: This feature simplifies connection, but has vulnerabilities. Find the option WPS → Disable in the settings.
• 🔄 Update your router firmware: Manufacturers regularly patch security holes. Check for updates in the section Administration → Firmware Upgrade.
• 📡 Hide network name (SSID): In the Wi-Fi settings, disable the option Enable SSID BroadcastThis won't protect against targeted hacking, but it will reduce the number of accidental connections.
• ⏳ Set up automatic Wi-Fi shutdown: some routers (for example, Keenetic) allow you to turn off the network according to a schedule (for example, from 1:00 to 6:00).

Additional measures for advanced users:

• 🔗 VLAN: Divide the network into virtual subnets (for example, for guests and main devices).
• 🛡️ VPN on a router: set up OpenVPN or WireGuard to encrypt all traffic.
• 📡 Change Wi-Fi channel: If your neighbors are using the same channel, this can make it easier to intercept data. Select the least congested channel in the settings. Wireless → Channel.

8. Common Mistakes and Myths About Wi-Fi Security

When setting up network security, many users make mistakes that, on the contrary, weaken securityLet's look at the most common ones:

• ❌ Myth 1: "Hiding your SSID protects against hacking."

  Reality: A network without a broadcast SSID is still visible, and you can connect to it manually by entering the name and password. This only reduces the number of accidental connections.

• ❌ Myth 2: "MAC filtering reliably protects the network."

  Reality: MAC addresses are easy to spoof (spoof). This is an additional measure, but not the primary one.

• ❌ Myth 3: "The longer the password, the better."

  Reality: Length is important, but entropy (randomness) is more important. Password 123456789012 (12 characters) will be hacked faster than K7#pL9!qR2$v (12 characters with different cases and symbols).

• ❌ Myth 4: "If the internet is fast, then no one is connected."

  Reality: Modern "parasites" can use the network sparingly, without overloading it. Check your device list regularly.

Typical errors when checking devices:

• 🔍 Ignoring devices with "unreadable" names (for example, esp8266 - this could be your smart light bulb).
• 📱 Block your gadgets (for example, a smartwatch or speaker) by forgetting their MAC address.
• 🔄 Not checking the guest network - sometimes "extra" devices are connected there.

⚠️ Attention: If blocking other devices doesn't improve your speed, the problem might not be with them. Check the router's bandwidth (for example, via Wi-Fi Analyzer) or contact your provider.

FAQ: Answers to Frequently Asked Questions

Is it possible to find out who exactly is connected to my Wi-Fi (name, address)?

No, you can only determine the MAC or IP address device manufacturer (for example, Samsung or Xiaomi) and sometimes the model. Personal information about the owner is only available through the police or the provider (by court order).

What should I do if my device list contains many unknown devices with names like "android-xxxx"?

These could be:

• Your old devices (for example, a forgotten smartphone or tablet).
• Guest gadgets (if you gave access to friends).
• Smart devices (lamps, sockets, vacuum cleaners) that connect automatically.

Check the MAC addresses in your router settings or disconnect all your devices from the network—any remaining ones will be considered unauthorized.

How to block a device permanently?

Methods:

1. Add its MAC address to the blacklist in the router settings (MAC Filter → Deny).
2. Change your Wi-Fi password - all devices will disconnect.
3. Turn on the function Intrusion Detection (if available in the router) to block suspicious connections automatically.

If the MAC address is fake (spoofing), only changing the password and encryption type (on WPA3).

Can a router notify about new connections automatically?

Yes, if it supports this feature. For example:

• ASUS AiProtection sends push notifications to the application.
• Keenetic can send emails or messages to the Telegram bot.
• TP-Link HomeCare shows notifications in the mobile application.

Set up notifications in the section Notifications or Security.

Is it true that my neighbors can hack my Wi-Fi in 5 minutes?

Depends on settings:

• If you have WEP- encryption or password 12345678 - Yes, in a few minutes.
• If it's worth it WPA3 with a long password - unlikely (it would take years to brute force).
• Vulnerabilities may exist in older router firmware or enabled WPS.

Update your firmware regularly and use complex passwords!