Port 162: SNMP-TRAP
Port 162 receives SNMP traps, the alerts a device sends when something changes, such as a link going down. A monitoring system listens here to react in real time.
UDPManagementUnencrypted by defaultIANA assigned
| Port number | 162 |
|---|---|
| Service | SNMP trap receiver |
| Protocol | UDP |
| Category | Management |
| Default encryption | No |
Security note. Port 162 is not encrypted by default. Restrict it to trusted networks, or use an encrypted alternative where one exists, to avoid exposing credentials and data in transit.
Frequently asked questions
What is port 162 used for?
Port 162 receives SNMP traps, the alerts a device sends when something changes, such as a link going down. A monitoring system listens here to react in real time.
Is port 162 TCP or UDP?
Port 162 (SNMP-TRAP) uses UDP.
Is port 162 secure?
Port 162 is not encrypted by default. Where possible, use an encrypted alternative or tunnel it over TLS or a VPN.
Should I open port 162 on my firewall?
Only if you specifically need SNMP-TRAP. Expose it to the smallest set of trusted sources, and never open database or Windows-service ports to the whole internet.