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SMAC 2.0 / 2.7 MAC Address Changer / Spoofer
(Windows 2000, XP, 2003, VISTA, 2008, Windows 7, VM)

SMAC Brochure

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Table of Content || SMAC Customers

SMAC is a powerful, yet easy to use MAC Address Changer (Spoofer) for Windows 7, VISTA,, 2008, 2003, XP, 2000 systems, regardless of whether the network card manufacturers allow this option or not (if supported by the network driver).  SMAC is developed by Certified Professionals (CISSP, CISA, CIPP, CSSLP, ethical hackers and MCSE).  It is also great for MAC Address Lookup.  More about SMAC...

SMAC customers include companies such as Intel, HP, Boeing, Cisco, Siemens, CSC, Berkeley Lab, Sandia National Lab, Boingo Wireless, ABB, and Government.  Just to name a few...   There has been 1,500,000+ SMAC downloads.



New Features in SMAC 2.0:

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SMAC 2.0 Screenshot -   Click to enlarge.

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Table of Contents:

SMAC Screenshot #2.  Click to enlarge.

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SMAC customers include major organizations such as Intel, HP, Boeing, Cisco, Siemens, CSC, Berkeley Lab, Sandia National Lab, Boingo Wireless, SPI Dynamics, ABB, and Government.  Just to name a few...   There has been 1,500,000+ SMAC downloads.

SMAC is a powerful, yet an easy-to-use and intuitive Windows MAC Address Modifying Utility (MAC Address spoofing) which allows users to change MAC address for almost any Network Interface Cards (NIC) on the Virtual PC, VM, Windows 7, VISTA, XP, 2003, 2000 systems, regardless of whether the manufacturers allow this option or not (If supported by the network card driver).

SMAC does not change the hardware burned-in MAC addresses.  SMAC changes the "software based" MAC addresses, and the new MAC addresses you change will sustain from reboots.

SMAC helps people to protect their privacy by hiding their real MAC Addresses in the widely available wifi Wireless Network.  SMAC also helps Network and IT Security professionals to troubleshoot network problems, test Intrusion Detection / Prevention Systems (IDS/IPS,) test Incident Response plans, build high-availability solutions, recover (MAC Address based) software licenses, and etc...

SMAC is the first Windows MAC Address Modifying Utility (since 2002), and it is developed base on the extensive research of KLC Consulting, Inc.  SMAC is continuous updated with the latest trend in the networking and security, as well as valuable customers' wishes and feedbacks.

SMAC is created and maintained by Certified Information Systems Security Professionals (CISSP), Certified Information Systems Auditors (CISA), Certified Secure Software Lifecycle Professional (CSSLP), Certified Information Privacy Professional (CIPP), and Microsoft Certified Systems Engineers (MCSE), ethical hackers and professional software engineers.  With combined efforts, SMAC is well designed to be an user-friendly tool for both the technical and non-technical users. SMAC is also developed in United States (USA).

We are a proud leader in the Windows MAC Address Modification Utility Research.  We have millions of SMAC downloads from satisfied users all over the world, and we have received tremendous feedbacks from many IT professionals and Security experts about our input to the community.  Yet, we don't just stop here.  We strive to improve our products to bring the next generation of technologies to our customers.

SMAC is a MUST-HAVE TOOL for IT, Security, Privacy, Wireless, Mobile, Networking professionals, online gamers, and everyone who needs to change a MAC address on Windows.


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SMAC 2.0 Features:

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  • Simple and Intuitive Interface, designed for NON-TECHIES, but enough info for TECHIES

  • MAC Address Lookup

  • Display Network Adapters and key details

  • Automatically Activate new MAC Address right after changing it (you have the option to manually activate)

  • Show the manufacturer of the MAC Address

  • Show All or "Only Active" network adapters

  • Randomly Generate any New MAC Address or based on a selected manufacturer

  • Pre-load MAC Addresses List and choose the new MAC address from the list (Professional Edition)

  • "IPConfig" button - click to show network adapter (IPConfig) info to confirm changes

  • Provides Easy-to-follow User Guide

  • Change MAC Address in 3 clicks:

    • Select a network adapter

    • Click "Random" to generate a MAC Address to spoof

    • Click "Update MAC" to change and activate new MAC Address

  • Protect your personal privacy by hiding the real MAC Address of your Network Adapters

  • Easy, intuitive, and user-friendly GUI for viewing and changing MAC addresses

  • Display detailed information of all available adapters, or ONLY the active network adapters

  • Displays the following information of your Network Interface Card (NIC)

o      Device ID

o      Active Status

o      NIC description

o      NIC Manufacturer

o      Spoofed status (Yes/No)

o      IP Address

o      Active MAC addresses

o      Spoofed MAC Address

o      NIC Hardware ID

o      NIC Configuration ID

  • View and select the 10 Most Recently Used (MRU) MAC Addresses directly from the MRU list to spoof

  • Generate comprehensive reports on Network Adapter details (Professional Edition only)

  • Built-in logging capability allows users to track MAC address change activities (Professional Edition has the option to turn-on or turn-off this option)

  • Remove spoofed MAC Address to restore original MAC Address

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Why use SMAC?

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Benefits and Applications of spoofing MAC address:

  • Protect Personal and Individual Privacy.  Many organizations track wired or wireless network users via their MAC Addresses...  In addition, there are more and more Wi-Fi Wireless connections available these days, and wireless network use MAC Addresses to communicate.  Wireless network security and privacy is all about MAC Addresses!

  • Perform Security Vulnerability Testing, Penetration Testing on MAC Address based Authentication and Authorization Systems, i.e. Wireless Access Points. (Disclaimer: Authorization to perform these tests must be obtained from the system owner(s).)

  • Build "TRUE" Stand-by (offline) systems with the EXACT same ComputerName, IP, and MAC ADDRESSES as the Primary Systems.  If Stand-by systems should be put online, NO arp table refresh is necessary, which eliminates extra downtime.

  • Some online Game Players (Gamers) require changing the MAC addresses to fix IP problems for some reason...

  • Build High-Availability solutions.  For example, some firewalls that run on multi-port NIC's (i.e. quad port NIC) require the same MAC address for every port.

  • Troubleshoot Network problems.  Arp Tables, Routering, Switching, ...

  • Troubleshoot system problems

  • Test network management tools

  • Test incident response procedures on simulated network problems

  • Test Intrusion Detection Systems (IDS), whether they are Host and Network Based IDS.

  • If for whatever reason you need to keep the same MAC address as your old NIC, but your old NIC failed...

  • Some software can ONLY be installed and run on the systems with pre-defined MAC address in the license file.  If you need to install one of these software to another system with a different Network Interface Card (NIC) because your NIC is broken, SMAC will come handy.  However, you are responsible to comply with the software vendor's licensing agreement.

  • Some Cable Modem ISP's assign IP addresses base on the PC's MAC addresses.  For whatever reason, if you need to swap 2 PC's  regularly to connect to the cable modem, it would be a lot easier to change the MAC addresses rather than to change Network Interface Card (NIC).  (You need to check with your ISP and make sure you are not violating any service agreements.)

  • Over 1,500,000 downloads by users from major corporations and from around the world, making SMAC the most stable and popular Windows MAC Address Modifying utility.


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SMAC 2.0 Versions
Features Comparison

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(x = Feature included)
Features Evaluation

Displays the detailed network adapter information in the Data Grid

x x x x x
Capable of showing "Only Active Network Adapters" or all network adapters in the Data Grid Show Active Network Adapters x x x x
Spoof MAC Address on Microsoft compatible Network Adapters for Windows VISTA, XP, 2003, 2000 systems Spoof 1 Pre-set MAC Address x x x x
Remove Spoofed MAC Address x x x x x
Capable of automatically restarting network adapter after MAC Address spoofing to activate new MAC Address x x x x x
Allow the option to choose automatically restart network adapter after MAC Address spoofing or manually restart x x x x x
Show "IPConfig" information with 1- button click x x x x x
Restart network adapter with 1-button click x x x x x
Validate MAC Address input   x x x x
Show Network Adapter manufacturer associated to the new Spoofed MAC address   x x x x
Capable of generating random MAC Address for spoofing   x x x x
Allow users to show up to 10 Most Recently Used (MRU) MAC Addresses and select a new Spoofed MAC Address directly from the MRU list   x x x x
1 year Free Maintenance Update and Support     x x x
Allow users to create and load a MAC Address List into SMAC and choose a New Spoofed MAC Address from the list     x x x
Create a detailed report for network adapters on your computer     x x x
Unlimited installation on the licensee's company computers located at a single physical location       x x
Unlimited installation on the licensee's company computers at unlimited physical locations         x

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SMAC customers include Intel, HP, Boeing, Cisco, Siemens, CSC, Berkeley Lab, Sandia National Lab, Boingo Wireless, SPI Dynamics, ABB, and Government.  Just to name a few...


FREE Download - SMAC 2.0:

Download Site 1

Download Site 2
Download Site 3


NEW! - SMAC 2.7 beta -

  • Fully Compatible with VISTA and Windows 2008, Windows 7 (32-bit and 64-bit)

  • Improved Internalization! - Fully functional in all non-English Windows environment

  • Capability to delete MAC Address Change log

  • Capability to delete MAC Address Change History (Recently Changed List)

Download SMAC 2.7 beta


SMAC 2.0 / 2.7 License Price List:

SMAC 2.0/2.7
Buy License
Free Free Download Free Download
Standard Edition $59.99 $39.99 Buy now
Professional  Edition $149.00 $99.00 Buy now
$3199.00 $2,499.00 Buy now
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SMAC-CL (SMAC Command Line Edition)

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SMAC-CL License 149.00 $99.00 Buy now


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  • SMAC 2.0 Evaluation Mode is limited to view ONLY the Active network adapters

  • SMAC 2.0 Evaluation Mode can only change MAC address to "0C0C0C0C0C01".  NOTE:  Please be aware you cannot have one MAC address assigned to more than one network adapters on the same network, otherwise you might experience network problems.

  • SMAC 2.0 Evaluation Edition allows you to remove the spoofed MAC address.

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System Requirements:

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  • SMAC 2.0 Works on Windows VISTA, XP, 2003, 2000

  • SMAC works on Network Interface Cards (NIC) that are on the Microsoft Hardware Compatibility List (HCL).  Usually you will see a "Designed for Windows 2000" or "Designed for Windows XP" logo on the box of the NIC.  If your NIC is not on the HCL, please contact your NIC manufacturer to check for compatibility.

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To avoid problems in your local area network:

  • Make sure you DO NOT assign one MAC address to multiple NIC's on a local area network (LAN).  If you do that, you might create some problems.  MAKE SURE YOU HAVE ONE UNIQUE MAC ADDRESS PER NIC!!!

  • You must assign MAC address according to the IANA Ethernet-number assignment database.

  • Make sure you DO NOT use Multicast MAC addresses.  You can check out the Multicast MAC addresses at

  • Note:  "00-00-00-00-00-00" is NOT a valid MAC address.  Even though you spoofed your MAC address to "00-00-00-00-00-00," your network adapter will reject this MAC address, and your TRUE MAC address will remain.  

  • In order to activate the new MAC address, you need to disable then re-enable the network adapter, or reboot your system.

  • Please read the SMAC 2.0 User Guide file before using SMAC.

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SMAC Discussion Group and Mailing List:

You are invited to sign up for the SMAC mailing list for updates of SMAC and related projects.

Please visit and join the SMAC discussion group at

To subscribe to the SMAC mailing list, please send an email to, or use the forms on the right.

To unsubscribe from the SMAC mailing list, please send an email to


Upcoming products:

  • SMAC 3.0 - with several new powerful features


MAC Address Spoofing for Other Operating Systems:

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About KLC Consulting:

KLC's mission is to provide a continuous effort to protect the confidentiality, integrity and availability of your corporate resources and data. Through each stage of the information security lifecycle, we help you prevent, detect, respond to, and resolve your enterprise security issues.  We published several best practices articles and virus analyses to assist the public to stay secure.

KLC encompasses security expertise in the MAC Address (Network Address) based Security, Networking and Application Security, Financial Institutions (GLBA), Healthcare (HIPAA Security) and Pharmaceutical (21 CFR Part 11), Vulnerability Management and Protection, Security Technologies Design and Implementation, and a full range of Professional Security Services.

Contact KLC Consulting:

KLC Consulting, Inc. 



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KLC Consulting, Inc.
PO Box 395
Holden, MA 01520


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