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Check the configuration and you will find a directive setting the mac address presumably to a virtual interface. &nbsp;Search the config for the mac address. &nbsp;You might find a single instance where the mac address was applied for some reason to the wrong interface.<br />
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While it is not advisable, it might not cause any problems. &nbsp;A problem occurs if two devices on the same network have the same MAC address, in your case, the interfaces are connected to two separate/segmented networks/switches.
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Check the configuration and you will find a directive setting the mac address presumably to a virtual interface.  Search the config for the mac address.  You might find a single instance where the mac address was applied for some reason to the wrong interface.

While it is not advisable, it might not cause any problems.  A problem occurs if two devices on the same network have the same MAC address, in your case, the interfaces are connected to two separate/segmented networks/switches.

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I tried searching through the config in order to change the MAC address on the code; but, no visible MAC address information was found.<br />
<br />
As a solution, I deleted all files on the device and then TFTP a config from a good known device. This wiped out the Mac Addresses and replace them with the original. For some reason, the first config was corrupted, I guess.<br />
<br />
Thanks,
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I tried searching through the config in order to change the MAC address on the code; but, no visible MAC address information was found.

As a solution, I deleted all files on the device and then TFTP a config from a good known device. This wiped out the Mac Addresses and replace them with the original. For some reason, the first config was corrupted, I guess.

Thanks,

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Hi, &nbsp;we have several Cisco VPN Concentrator 3005s... We have had a major error with one in which the interfaces show the SAME MAC address for public and the private interface.<br />
<br />
Is there a way to change this? &nbsp;This is not the case on any of the other devices.<br />
<br />
Thanks.
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Hi,  we have several Cisco VPN Concentrator 3005s... We have had a major error with one in which the interfaces show the SAME MAC address for public and the private interface.

Is there a way to change this?  This is not the case on any of the other devices.

Thanks.

Change MAC address on VPN Concentrator interfaces?

A virtual private network (VPN) is a network that uses a public telecommunication infrastructure, such as the Internet, to provide remote offices or travelling users access to a central organizational network securely. VPNs encapsulate data transfers using secure cryptographic methods and other security mechanisms to ensure that only authorized users can access the network and that the data cannot be intercepted.

Security is the protection of information systems from theft or damage to the hardware, the software, and the information on them, as well as from disruption or misdirection of the services they provide. The main goal of security is protecting assets, and an asset is anything of value and worthy of protection.  Information Security is a discipline of protecting information assets from threats through safeguards to achieve the objectives of confidentiality, integrity, and availability or CIA for short. On the other hand, disclosure, alteration, and disruption (DAD) compromise the security objectives.