: Launch the TP-Link Deco app and go to the Security tab.
If the limitations of MAC filtering are a deal-breaker, TP-Link provides other, often more effective, tools within the Deco ecosystem:
To make MAC filtering effective on your Deco M4, you must physically access the device you want to manage, go to its Wi-Fi connection settings, and toggle off "Private Address" or "Randomized MAC" for your home network. This forces the device to use its static, original hardware MAC address. Is MAC Filtering Enough for Network Security? mac address filter on tplink deco m4
Modern operating systems (like iOS 14+, Android 10+, and Windows 10/11) use a security feature called or MAC Randomization .
On the main dashboard, tap on the Online Clients icon to see all connected devices. Find the Device: Locate the device you want to block. Block the Device: Tap the device name. Select Block or Add to Blacklist . : Launch the TP-Link Deco app and go to the Security tab
If you have mistakenly blocked a device or wish to allow a device back on the network: Open the Deco App. Go to -> Wi-Fi Access Control -> Block List . Tap on the blocked device. Select Unblock or Remove from Block List . Limitations of MAC Filtering to Keep in Mind While using the MAC Address Filter on TP-Link Deco M4 is effective, it is not foolproof.
If you need help optimizing your network security, let me know: Is MAC Filtering Enough for Network Security
It's crucial to understand that MAC address filtering is not a strong security measure. MAC addresses are transmitted in plain text over the air and can be easily "sniffed" by a determined individual using simple software. Once an attacker has captured a valid MAC address from your network, they can use a technique called "MAC spoofing" to change their device's MAC address to that of an approved one, bypassing your filters entirely. Therefore, MAC filtering should never be used as a replacement for a strong Wi-Fi password and modern encryption like WPA2/WPA3. Think of it as an extra layer of administrative control, not an impenetrable security fortress.
However, more recent firmware updates and hidden settings have introduced a feature called "Access Control" within the web interface, which appears to allow for a true whitelist (Allow List). This guide will cover both the basic Blacklist method via the Deco app (which is confirmed to work on all models) and the more advanced Access Control feature found in the web management portal.
is managed via the , making the process of filtering devices simple and intuitive. Unlike traditional routers, the Deco system manages this through a "Block List" approach. Step 1: Open the Deco App