Hi,
I lost access, via the console, to my CBS350 switch three days after I added MAC-layer station source addresses to the MAC address table. DoS includes attached devices not being able to receive their dynamic IPv4 addresses. As a test, when a device, like the TV, is connected directly to the router (pfSense, which serves as the gateway and DHCP server) the device is assigned an IP address and connection is established.
Is there a way to regain access without unplugging the switch? I'd like to copy the syslog for review. Also, and more importantly, how can I prevent this attack from happening again? Thanks.
