Friday, February 12, 2021

Finding out what devices are connected to network

Looking for any ideas how to monitor what devices are connected to the network. There are many different departments etc. always adding and removing devices and in a time all the Excels and other databases/CMDBs start to become at least a bit outdated.

So I'm looking for a way to help validate the data in the CMDB by checking what we have actually seen in the network in the last month or two. As this wouldn't be a NAC type of situation where we rely only on the profiled data, it can be a bit cheaper and less trustworthy solution. We'd then figure the rest out manually. We're going towards 802.1x all the time but also that takes quite a while and in the meantime we would need something :)

Some options I've thought:

  • Do MAB that permits everything but writes extra attributes for ClearPass endpoints (last seen switch/port/connection time)
  • Add a FortiGates to each aggregation switch and mirror traffic to FortiGate and enable device detection
  • Buy Clearpass device insight (though not sure if this would be beyond budget)
  • Buy linux boxes and use some security tool to gather data from mirrored port (any recommendations?)

Any thoughts or ideas?



No comments:

Post a Comment