Should port 2055 be open on my firewall?

Port 2055 is generally safe to have open. Apply standard security practices: keep software updated and monitor access logs.

What transport protocol does port 2055 use?

Port 2055 (NetFlow) uses the UDP transport protocol and falls under the System & Infrastructure category.

:2055 (UDP)

NetFlow

Q: Is port 2055 (NetFlow) dangerous?

Port 2055 is classified as low risk. This service uses encryption or has a minimal attack surface, making it relatively safe to expose with standard security practices.

Low Risk

UDP — System & Infrastructure

Port Overview

Port Number 2055

Service Name NetFlow

Transport Protocol UDP

Category System & Infrastructure

Security Risk Low

Port Range Registered (1024-49151)

What is Port 2055?

Port 2055 is commonly used for Cisco NetFlow data export, a network protocol for collecting IP traffic flow information. Network devices export flow records to a NetFlow collector on this port for traffic analysis, capacity planning, and security monitoring. NetFlow data is invaluable for understanding network usage patterns.

UDP System & Infrastructure Commonly Used

Security Considerations

Port 2055 (NetFlow) is classified as low risk. This service uses encryption or has a minimal attack surface, making it relatively safe to expose.

Recommendation: Standard security practices apply. Keep software updated and monitor access.

Related Ports — System & Infrastructure

0 Reserved 1 TCPMUX 2 Management Utility 3 CompressNET 4 Unassigned 5 RJE 6 Unassigned 7 Echo

Related Terms

Bandwidth Latency Packet Loss Ping Throughput ASN