Port 12865Netperf

Netperf benchmark control service used to coordinate network throughput and latency tests.

transport: tcp
in transit: cleartext
assignment: official
risk: 2/10
lookups: 0

also known as netserver, Netperf benchmark

Technical Details

what runs on :12865

Netperf uses a cleartext TCP control connection to the netserver daemon, normally on TCP/12865. The connection negotiates the requested test and its parameters, coordinates the benchmark, and returns results; the actual test traffic may use TCP or UDP and can involve additional dynamically selected sockets depending on the test type. Netperf and netserver are the principal related program names.

Security Information

exposure of :12865

risk score

2/ 10safe

routine exposure. this port is rarely the way in on its own — keep it patched and logged and move on.

network services averages 2.8 across 1,183 ports — this one sits 0.8 below.

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

every listening transport is another surface to filter at the edge

security overview

The service normally provides no authentication or encryption. An exposed listener can allow unauthorized clients to consume CPU, memory, sockets, and network bandwidth by running benchmark tests, so it should generally be restricted to trusted test hosts or isolated networks rather than exposed to the internet.

Record

iana registry entry

port: :12865
service: Netperf
transport: TCP
encryption: cleartext
assignment: iana registered
risk: 2/10safe
category: Network Services System
usage: The netserver daemon listens on TCP port 12865, while netperf clients connect to it to negotiate and run benchmark tests. Engineers typically encounter it in performance-testing environments, not as a general-purpose production service.
lookups: 0rank 994
added: 2026-09-15
updated: 2026-09-15
references: IANA service name registry — port 12865

Something wrong?

This record is maintained by the engineers who use port 12865. Every field on it is editable — change what's wrong, say how you know, and a reviewer publishes it, usually within a minute. Last touched 2026-09-15.

01edit any field on a page of its own
02a model checks it for accuracy and spam
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edit this record →back to the registry

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risk mix of the 8 listed

caution100%

0 of 8 encrypted

Port :12865Netperf

Technical Details

Security Information

Related Ports

Port 12865Netperf