Port
Port 161 — SNMP
Port 161 (UDP) is used by SNMP. Simple Network Management Protocol — polls device stats.
Port 161 at a glance
| Property | Value |
|---|---|
| Port number | 161 |
| Transport | UDP |
| Service | SNMP |
| Category | Well-known port |
What it is used for
Simple Network Management Protocol — polls device stats.
Security considerations
SNMPv1/v2c use clear-text community strings. Use SNMPv3 with auth+privacy.
See our full TCP/UDP port reference and learn how firewalls filter ports in the CyberOps course.
Frequently asked questions
What is port 161 used for?
Port 161 (UDP) is used by SNMP. Simple Network Management Protocol — polls device stats.
Is port 161 TCP or UDP?
Port 161 uses UDP.
Is it safe to open port 161?
SNMPv1/v2c use clear-text community strings. Use SNMPv3 with auth+privacy.
Related
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