What is throttling?
Throttling restricts traffic initiating from specific IP addresses by analyzing the messages from the connections in real time and applying policies according to what it discovers from the analysis. For example, if 50% of the email originating from a specific IP address over a 24 hour period is infected with a virus or contains spam, VUmailguard will apply a rule to reject the messages originating from that IP address for a period of time. VUmailguard may also restrict the number of connections it accepts from IP addresses that are suspected of threatening the Vanderbilt network with a Denial of Service Attack (DOS) or Directory Harvest Attack (DHA).
