MAC Address Spoofing using macchanger

This folder contains my cybersecurity project focused on MAC address spoofing using the macchanger utility in Linux. The objective was to understand how MAC addresses function in local networking and how changing them can impact device identity and access.

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Tools Used

• Kali Linux
• Terminal
• macchanger
• ip / ifconfig

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Objective

• Understand the purpose and structure of MAC addresses
• Perform MAC spoofing (both random and manual)
• Analyze the spoofed MAC address in system and optional traffic captures
• Revert safely to the original MAC address

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Steps Performed

1. Identified Available Network Interfaces

ip link show

The active interface was identified as eth0.

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2. Brought Interface Down

sudo ip link set eth0 down

Reason: MAC addresses can only be changed when the interface is disabled.

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3. Spoofed the MAC Address

Random MAC:

sudo macchanger -r eth0

Manual MAC:

sudo macchanger --mac=00:11:22:33:44:55 eth0

macchanger showed:

• Permanent MAC
• Current MAC
• New (spoofed) MAC

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4. Brought Interface Back Up

sudo ip link set eth0 up

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5. Verified the Change

macchanger -s eth0

or

ifconfig eth0

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Restore to Original MAC Address

sudo ip link set eth0 down
sudo macchanger -p eth0
sudo ip link set eth0 up

Rebooting also resets the MAC to its permanent hardware value.

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Files Included

File	Description
MAC_Address_Spoofing_Report.docx	Full documentation of the spoofing process

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⚠This project was conducted in a safe, isolated lab environment and is for educational purposes only.