You have gained access to a workstation in an organization. There are indications that remote printing endpoints might grant an additional path forward within the network. Which approach identifies those printing endpoints by focusing on the port used for direct printing?
Create a user account that is linked to the print service
Scan for hosts that respond on TCP port 9100
Inspect spooler-related registry information
Search for recently processed print jobs in log entries
Scanning for open TCP port 9100 (used by direct printing devices) exposes remote printing endpoints that can be leveraged. Direct printing solutions frequently listen on this port, so a targeted port sweep may reveal hosts running these services. Registry entries and log reviews do not actively find devices on the network, and creating a new user does not locate new endpoints.
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Why do direct printing devices use TCP port 9100?
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How can you perform a targeted scan to identify devices using TCP port 9100?
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What security risks are associated with exposed TCP port 9100 on a network?