To my knowledge Firepower does not use Telnet. When creating a session to the sfr module and running a netstat -an I see the sensor listening on port 23
sfr$ netstat -an
tcp 0 0 0.0.0.0:23 0.0.0.0:* LISTEN
Can anyone tell me why this sensor is listening on tcp port 23 and if this can be turned off?
This seems to be the defaut behavior.
Thanks
