![]() We then looked at the ARP caches of the problem servers and compared them to each other. However, when he pinged a different server, there were no problems. Pinging the problem server or the server he had been working on resulted in dropped packets. My partner moved to a third server and tried the tests again. Pinging anywhere resulted in some of the packets making it, and some of them meeting their demise in the Ethernet abyss. I logged on to the problem server and my partner to the server sitting next to it. Our next step was to log on to the server directly in order to check the logs and so on. We tried several additional times and had the same result. My colleague was experiencing the same problem, and we both began pinging the server. My connectivity to it was flittering in and out for no apparent reason. It all started one morning when one of our servers was on the blink. This is not the case, and I believe that this presents a serious security problem. It is possible to set the MAC address of almost any computer on your network! To think that all this time, we blindly believed that the hardware vendor controlled MAC addresses. Reveals a security concern created by the ability to change a computers MAC address through the Windows RegistryĪ colleague and I recently faced a perplexing problem, which led us to a startling discovery. Lock IT Down: Registry hack can unlock MAC address vulnerability ![]()
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