Have you noticed your internet speed has suddenly dropped, or your router is flickering more frequently than usual? Perhaps unauthorized devices have connected to your Wi-Fi network—neighbors, guests who forgot to disconnect, or even hackers exploiting security vulnerabilities. Checking the list of connected devices — the first step to securing your network and restoring normal speeds.
In this article we will look at software and hardware methods, which will help you see everyone using your Wi-Fi. You'll learn:
- 🔍 Built-in tools routers for network monitoring (without installing software).
- 💻 Top 5 Windows Programs, showing connected devices with details by IP, MAC and traffic.
- 📱 Mobile applications for Android/iOS, which scan the network directly from your phone.
- ⚠️ How to distinguish legitimate devices from fake ones and what to do if you find a suspicious connection.
Not all programs are equally effective—some only show IP addresses, while others recognize device models by MAC address. We've compiled a comparative table of utilities indicating their capabilities and limitationsso you can choose the optimal tool for your tasks.
1. Built-in router tools: how to view connected devices without software
The easiest way to check who is on your network is to go to router web interface. Most modern models (TP-Link, ASUS, Keenetic, MikroTik) display a list of connected clients in real time.
Step-by-step instructions:
- Open your browser and enter your router's IP address in the address bar (usually
192.168.0.1or192.168.1.1). - Enter your login and password (by default it is often
admin/admin, but it’s better to check on the device’s sticker). - Find the section with the type name:
- 📊
DHCP Clients List(at ASUS), - 🖥️
Devices on the networkorClient list(at TP-Link), - 🔗
Connected Devices(at Netgear).
- 📊
In this section you will see a table with devices, which usually indicate:
- 🆔 Device name (if configured),
- 🔢 IP address (For example,
192.168.0.103), - 🔧 MAC address (unique type identifier
00:1A:2B:3C:4D:5E), - 📶 Connection type (Wi-Fi or Ethernet).
⚠️ Attention: Some routers (especially budget models) update the list of connected devices with a delay of up to 5 minutes. If you just disconnected a device, it may still be listed on the network.
If you see a device with an unfamiliar name in the list (for example, Android-123456 or Unknown Device), this is a cause for concern. However, don't rush to block it—sometimes smart light bulbs, cameras, or other IoT gadgets display this way.
2. Top 5 Windows Programs: Monitoring Wi-Fi Networks from a PC
Built-in router tools aren't always convenient—they don't display connection history, don't analyze traffic, and often have limited functionality. For in-depth diagnostics, it's better to use specialized software. We tested 5 popular programs and made a comparison of them:
| Program | Paid/Free | Shows MAC addresses | Traffic analysis | Manufacturer's definition | New device notifications |
|---|---|---|---|---|---|
| Wireless Network Watcher (NirSoft) | Free | ✅ | ❌ | ✅ (by MAC) | ❌ |
| Advanced IP Scanner | Free | ✅ | ❌ | ✅ | ❌ |
| Angry IP Scanner | Free | ✅ | ❌ | ✅ | ❌ |
| GlassWire | Shareware | ✅ | ✅ (graphs) | ✅ | ✅ |
| SoftPerfect WiFi Guard | Paid (30-day trial) | ✅ | ✅ (basic) | ✅ | ✅ |
Let's take a closer look at the two most effective utilities.
Wireless Network Watcher - simplicity and speed
This is a free solution from NirSoft No installation required—just download the archive and run the EXE file. The program scans the network and displays:
- 🖥️ IP and MAC addresses all connected devices,
- 🏷️ Network name (if the device broadcasts it),
- ⏱️ Time of first detection (useful for keeping track of new gadgets).
The downside is there's no traffic analysis or notifications. But the program lightweight (weighs less than 1 MB) and works even on old PCs.
GlassWire - advanced monitoring with graphs
If you need to not only see the devices, but also analyze their activity, GlassWire — the best choice. The program creates traffic consumption graphs, displays suspicious connections, and can even block unwanted connections.
Peculiarities:
- 📈 Traffic visualization by devices and applications,
- 🔔 Notifications about new devices on the network,
- 🛡️ Built-in firewall to block suspicious MAC addresses.
Unknown MAC addresses|Unusually high traffic from the device|Connections during off-hours|Devices with names like "Unknown" or "Generic"-->
⚠️ Attention: Some antiviruses (for example, Avast or Kaspersky) can block Wireless Network Watcher as "potentially unwanted software." This is a false positive—NirSoft is known for its administration tools. Please add the program to your antivirus exceptions.
3. Mobile apps for Android and iOS: Check Wi-Fi from your phone
You don't always have a computer at hand, but almost everyone has a smartphone. Special apps allow you to scan the network directly from your phone, connected to the same Wi-Fi network. The main advantage is mobility: You can check the network from anywhere in the house.
Best apps for Android And iOS:
- 📱 Fing — identifies devices, displays open ports, and even tests network speed. A free version with limitations is available.
- 🔍 Network Analyzer — scans the network, displays MAC addresses and device manufacturers. Suitable for iPhone.
- 🛡️ WiFi Guard — compares current connections with a "white list" and notifies about new devices.
Example of working with Fing:
- Install the app from Google Play or App Store.
- Connect to your Wi-Fi network.
- Click
Scan— after 10-20 seconds a list of devices will appear. - Click on any device to see its MAC, manufacturer, and connection history (in the paid version).
Mobile apps are convenient, but they have limitations:
- ❌ Not all are shown traffic in real time (only Fing Pro And GlassWire Mobile).
- ❌ On iOS Due to Apple restrictions, apps cannot lock devices, only scan them.
- ❌ Free versions often display ads and limit the number of scans.
4. How to identify a "foreign" device: signs and actions
You found an unknown device online—what now? Before blocking it, make sure it's not your device. signs of an extraneous connection:
- 🆔 Unknown MAC address - check it through a service like
macvendors.com(indicates the manufacturer). For example, if the address starts withB8:27:EB, this device Raspberry Pi. - 📉 High traffic If your device is consuming gigabytes of data, someone may be downloading torrents via your Wi-Fi.
- ⏰ Activity at unusual times - Connections in the middle of the night may indicate a hacker or a neighbor using your network.
What to do if you are sure the device is someone else's:
- Change your Wi-Fi password — use a complex password (at least 12 characters with numbers and special characters).
- Enable MAC filtering — in the router settings, add only your devices to the "white list."
- Update your router firmware — outdated versions have vulnerabilities that hackers exploit.
- Disable WPS - This protocol is easy to hack even without a password.
How to hack Wi-Fi via WPS?
WPS (Wi-Fi Protected Setup) allows you to connect to a network by pressing a button on the router or entering a PIN. Hackers can brute-force the PIN (just 8 digits) in a few hours using programs like Reaver or BullyIf WPS is enabled, disable it in the router settings in the section Wireless → WPS or Security → WPS.
⚠️ Attention: MAC filtering isn't a panacea. A skilled hacker can spoof their device's MAC address to an authorized one. Always use it in conjunction with complex password And modern encryption (WPA3).
5. Alternative methods: command line and specialized utilities
If you prefer to work without a graphical interface, you can use Windows command line or Linux/macOS terminalThese methods require technical knowledge, but provide complete control over scanning.
Method 1: Windows Commands (CMD)
Open Command Prompt (Win + R → cmd) and run:
arp -a
This command will display the ARP table with the IP and MAC addresses of all devices on the local network. To save the results to a file, add:
arp -a > wifi_devices.txt
Method 2: nmap — a powerful network scanner
Nmap — is a professional network scanning utility. It displays open ports, OS versions, and even vulnerabilities. Install it from the official website and run the scan:
nmap -sn 192.168.0.0/24
Where 192.168.0.0/24 — your network range (may differ, check in your router settings).
Advantages nmap:
- 🔍 Discovers devices even if they don't respond to ping.
- 📊 Shows open ports (useful for identifying vulnerabilities).
- 🖥️ Works on Windows, Linux, and macOS.
⚠️ Attention: Usage nmap Scanning other people's networks (for example, your neighbors') may be considered an attempt to hack and subject to prosecution. Use this utility only on your own network!
6. How to protect Wi-Fi from unwanted connections: prevention
It's better to prevent unauthorized access than to search for and block other people's devices later. Here 7 Steps to Protect Your Network:
Change the default router password|Enable WPA3 encryption (or WPA2 if WPA3 is not supported)|Disable WPS|Disable remote router administration|Update the router firmware|Hide the SSID (do not show the network name)|Set up a guest network for visitors-->
Let's look at the key points:
1. Encryption: WPA3 vs. WPA2
Old standard WEP hacked in minutes, WPA — in hours. Use:
- 🔒 WPA3 — the most secure protocol (supported by routers since 2018).
- 🔓 WPA2 - If your router does not support WPA3, select
WPA2-PSK (AES).
2. Guest Wi-Fi for visitors
If you often have guests, set up guest network in the router. She:
- 🚪 Isolates guest devices from your main network (they won't see your files or printers).
- 🔄 Easy to turn off after your visit.
- 🔑 Can have a separate password.
3. Regularly change your password
Change your Wi-Fi password every 3-6 months. Use generators like 1Password or KeePassto create a strong password. An example of a good password:
k7#pL9@mQ2!vN5*F
FAQ: Frequently asked questions about viewing connected devices
❓ Is it possible to see which websites connected devices are visiting?
Yes, but for this you need specialized programs like GlassWire (shows domains) or setting DNS monitoring on the router (for example, through OpenDNS). Regular network scanners (like Wireless Network Watcher) they don't know how to do this.
⚠️ Tracking other devices' traffic may violate privacy laws (e.g., Article 138 of the Russian Criminal Code on violation of the privacy of correspondence). Use this feature only for your own devices or with the consent of other users.
❓ Why does my router show unknown devices with names like "Direct-TV" or "Sonos"?
These could be:
- 📺 Smart TVs (LG, Samsung, Sony),
- 🎵 Acoustic systems (Sonos, Bose),
- 💡 Smart light bulbs (Philips Hue, Xiaomi Yeelight),
- 🎮 Game consoles (PlayStation, Xbox).
Check the MAC address of the device via macvendors.com - this will help identify the manufacturer.
❓ How do I block a device by MAC address on a router?
Instructions for most routers:
- Go to the router's web interface (
192.168.0.1or192.168.1.1). - Find the section
Wireless → MAC Filtering(orSecurity → MAC Filtering). - Add the device's MAC address to the "black list" (Deny).
- Save the settings and reboot the router.
🔹 On Keenetic the path will be different: Home Network → Devices → [select device] → Block.
❓ Is it possible to find out who is connected to Wi-Fi if I don't have access to the router?
Yes, but with restrictions:
- 💻 On Windows use Wireless Network Watcher or Advanced IP Scanner.
- 📱 On Android — Fing or Network Analyzer.
- 🍎 On iPhone possibilities are limited - try it Network Analyzer Lite.
However, without access to the router you you won't be able to block someone else's device - just detect it.
❓ Why do some programs show fewer devices than the router?
This happens for several reasons:
- ⏳ Scan delay — programs do not update the list in real time.
- 🔌 The devices are connected via cable (Ethernet) - Some scanners only show Wi-Fi clients.
- 🛡️ Firewall or antivirus blocks program requests.
- 📡 Devices in sleep mode - they may not respond to ping.
For accurate results, use several methods (for example, router + nmap + mobile application).