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Ports Used by Network Discovery to Discover Network Devices

Created: 30 May 2007 • Updated: 16 Oct 2008
Joel Smith's picture
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In a secure network environment, it's important to know what Ports are accessed and utilized by your management applications. Network Discovery is an agentless discovery tool that allows the Notification Server to go out on the wire and discover what devices exist. This tech tip covers what ports are used by Network Discovery, including their corresponding protocol.

The following Ports are Required by Network Discovery:

  • SNMP : 161
  • HTTP : 80

The following Ports are Optional, but are used by Default:

  • FTP : 21
  • SSH : 22
  • Telnet : 23
  • SMTP : 25
  • Sun RPC : 111
  • Terminal Services : 3389

The following Ports are used If AMT is Enabled:

  • Small Business Mode : 16992
  • Enterprise : 16993

SNMP uses UDP, and the rest are defaulted at TCP.

*Many of the above items can be configured within the Scan Policy for Network Disocovery. See this screenshot to see the location of the Scan Policy: