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Port 162SNMP Trap

SNMP Trap is a notification mechanism within the Simple Network Management Protocol (SNMP). It allows network devices such as routers, switches, servers, and firewalls to send unsolicited alert messages—called traps—to a management system when predefined conditions occur. This enables real-time monitoring and rapid response to network events including failures, threshold breaches, or configuration changes..

inSecurityNetwork Services
transport
tcp · udp

2 transports registered

in transit
cleartext

payload readable on path

assignment
official

registered with iana

risk
4/10

caution

lookups
9,469

rank 504 of 993 · top 51%

Technical Details

what runs on :162

Simple Network Management Protocol (SNMP) is a widely used protocol for managing devices on IP networks. Port 162 is specifically designated for receiving SNMP Trap messages. Unlike typical SNMP queries that poll devices (handled over port 161), traps are asynchronous notifications initiated by the device itself to inform the management station about significant events without being solicited first. This helps administrators gain real-time insights into network status.

SNMP Traps typically use UDP due to its connectionless nature, which reduces overhead and allows rapid delivery of alerts. However, TCP is also supported in certain implementations to ensure reliability when required. These traps can convey a broad range of information, including hardware failures, high CPU utilization, link status changes, or intrusion detections—making it an essential part of proactive network management.

Management systems configure rules to parse incoming trap data, correlate events, and trigger automated workflows or escalate alerts. SNMP versions 1, 2c, and 3 support traps, with version 3 adding additional security features such as authentication and encryption to protect transmitted data against tampering and unauthorized access.

Security Information

exposure of :162

risk score

4/ 10caution

worth attention. how exposed you are depends on configuration — don't leave it reachable from the internet without a reason.

security averages 3.8 across 216 ports — this one sits 0.2 above.

in transit

cleartext

credentials and payloads are readable by anyone on path

assignment

official

registered with iana for this service — scanners fingerprint it by number

reachable over

tcp · udp

udp is connectionless — source addresses are trivially spoofed and it is a reflection favourite

security overview

Common Vulnerabilities:

  • SNMP Trap messages can be intercepted or spoofed since many deployments rely on unencrypted UDP, exposing sensitive network alerts to attackers.
  • Improperly configured SNMP communities may allow unauthorized trap submissions, leading to false alarms or masking real issues.
  • Lack of access controls can enable attackers to flood the management station with bogus traps (‘trap storm’), degrading network monitoring effectiveness.

Mitigations:

  • Use SNMPv3 for its authentication and encryption capabilities to secure trap transmissions.
  • Implement strict access-control lists (ACLs) to restrict which devices are permitted to send traps.
  • Employ network segmentation and firewall rules to contain SNMP trap traffic.
  • Regularly audit and update community strings or SNMP credentials.
  • Monitor trap volumes and implement throttling or filtering to defend against denial-of-service scenarios caused by malicious or misconfigured devices.

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all 216 in security →

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risk mix of the 8 listed

  • caution100%

3 of 8 encrypted