MikroTik RouterOS has capabilities that could help detect cloned MAC addresses, but doing so effectively depends on how the system is configured and the network policies in place. There is no specific functionality in MikroTik designed exclusively to detect cloned MAC addresses automatically, but you can use several strategies and features to help identify potential clones:

Traffic monitoring and analysis

You can monitor network traffic to detect anomalies or suspicious patterns, such as multiple devices using the same MAC address from different network locations. This can be done by observing the router logs or using network monitoring tools that can integrate with MikroTik.

MAC-based access control (MAC Filtering)

Although this does not directly detect cloning, restricting network access to a list of known, authorized MAC addresses can help prevent unauthorized use of cloned MAC addresses.

Bridge DHCP Snooping

While MikroTik does not have a feature called “DHCP Snooping” as such, you can configure mBridge settings that allow you to control DHCP traffic and limit the propagation of traffic between interfaces to detect discrepancies or suspicious use of MAC addresses.

Notifications and Alerts

Configuring alerts for notifications in case the same MAC is detected from different interfaces or network segments, which could indicate cloning.

Custom scripts and tools

You can write scripts in RouterOS or use third-party tools to analyze the collected data and look for indicators of MAC cloning.

Detecting cloned MAC addresses requires a proactive approach and the implementation of multiple monitoring and security strategies.

It is also important to keep security policies up to date and educate users about the risks and red flags associated with MAC address cloning.