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Randomized and Changing MAC (RCM)

MDM service supplies a distinct gadget identity. When the endpoint links to the network utilizing randomized MAC address, MDM compliance check and other security controls stop working since of unacknowledged random MAC addresses as gadget identifiers. This option supplies a distinct identity to the gadget based upon EAP-TLS which is called DUID (Device Unique ID) […]

Spectrum is rate limiting VOIP/SIP traffic (port 5060). How to find out if you are affected.

Summary: Spectrum “” updated” our DOCSIS cable television modem and it broke all of our IP phones. I found they are rate-limiting incoming port 5060 traffic. Spectrum “” assistance” is reluctant and useless to assist. You may be impacted too. I'' ll reveal you how to check, and how to exploit this vulnerability. This is […]

Is CRL checking required for wired 802.1x on Windows?

I'm running into sporadic issues with Windows clients failing to authenticate with wired 802.1x. We're using an internally signed certificate on our authentication server and it is trusted by the clients. The server certificate does have CRL/OCSP distribution points listed. Logs from the machine do show that during authentication the client is failing to reach […]

Strange Problem with Ethernet Connectivity on DGS-108/GS108 Switches

Hi, I have a very strange problem with respect to connectivity on DGS-108/GS108 switches. Background: I am working on developing a embedded hardware which uses i.MX8M Mini System on Chip. Atheros AR8031 Ethernet Trans-receiver is installed on this board. This embedded hardware runs a minimal variant of Linux OS which supports the Ethernet software stack […]