Overview of Monitoring Mode Parent topic

Monitoring mode is designed for evaluating Deep Edge on a production network without blocking any traffic or making Deep Edge a point of failure in the network flow. In monitoring mode, Deep Edge is invisible to the network. Establish the correct monitoring settings on the network switch to mirror traffic to the port that connects to Deep Edge. Deep Edge will apply policies to the mirrored traffic, but only logs violation-related information. Network traffic is never blocked by policies in this mode. Deep Edge in Monitoring mode illustrates Deep Edge in monitoring mode:
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Deep Edge in Monitoring mode

In monitoring mode, network traffic does not pass directly through Deep Edge. Deep Edge runs independently outside the network (logically) aided by the switches of the network which mirror the specified traffic to interface(s) on which Deep Edge listens. Deep Edge monitors the status of the traffic and presents the information to the Deep Edge user.
Trend Micro suggests Deep Edge be deployed at the core Internet switch in order to see a copy of all Internet traffic leaving and entering the network. Deep Edge requires at least two network interfaces to function correctly in Monitoring mode. In addition to the interface that Deep Edge uses to listen for traffic, there should be another connection for Deep Edge to access the Internet to connect to the ActiveUpdate and WRS query servers, as well as other cloud protection sources that Deep Edge offers.
Monitoring mode is typically used when:
  • The network already has related devices (firewall, IDPS) deployed, but there is a lack of visibility into the overall network posture. In this case, Deep Edge provides visibility without dramatically changing the network topology.
  • Before deploying Deep Edge inline, Monitoring mode could help with the evaluation of the Deep Edge device. After learning the security benefits provided by Deep Edge, you could change from Monitoring mode to either Bridge mode or Router mode for true inline protection.