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Hi. I recently pruchased a ProSafe Smart Switch. One of the features I wanted was Auto-DoS detection that shuts off ports that are suspected of a DoS attack. Whenever I enable this, the two Lexmark printers on our network are quickly disconnected. I have contacted support twice. The first time I contacted them, they told me that this feature should be used as a fallback and I should have a firewall in place between the modem and the switch. I have since purchased a ProSAFE firewall and got it set up, but this has not solved the problem.
I contacted them again. They requested I monitor the packets and send them too them, but they have not gotten back to me on a solution. The packets that cause the alert art MDNS or Multicast packets. Here is what one of the packets looks like:
I have changed some of the flooding settings for that port, but this makes no difference. Are these just old printers? Is there a way to add an exception for a port and still have Auto-DoS enabled?
