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UDP 162

ProtocolUDP
Port162
Labelssnmp-trap snmptrap, Traps for SNMP

Synopsis

  • UDP port 162 is the standard port for receiving SNMP Trap and Inform notifications.
  • Net-SNMP’s snmptrapd (Linux/Unix) listens on UDP 162 to collect traps from routers, switches, and servers.
  • Microsoft Windows provides the “SNMP Trap” service (snmptrap.exe) that listens on UDP 162.
  • SolarWinds Orion/NPM includes a Trap Receiver/Trap Viewer that binds to UDP 162.
  • Paessler PRTG’s “SNMP Trap Receiver” sensor/probe uses UDP 162.
  • Nagios XI/Core commonly use snmptrapd with SNMPTT to process traps on UDP 162.
  • Zabbix integrates SNMP traps via snmptrapd and zabbix_trap_receiver on UDP 162.
  • IBM Tivoli Netcool/OMNIbus (mttrapd) and HPE Network Node Manager i (ovtrapd) receive traps on UDP 162.
  • WhatsUp Gold and ManageEngine OpManager include SNMP Trap Listener components on UDP 162.
  • Security note: attackers have abused exposed UDP 162 listeners by sending spoofed or malformed traps to flood NMS systems or trigger parser vulnerabilities in specific trap receivers.

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