Port 862TWAMP-Test

UDP 862 carries TWAMP-Test measurement packets to a reflector for two-way network performance measurements.

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

also known as Two-Way Active Measurement Protocol

1 other service is registered on port 862. compare all 2 →

Technical Details

what runs on :862

TWAMP separates session control from measurement traffic. A controller and server establish a TWAMP-Control connection, normally on TCP 862, negotiate session parameters and security mode, and then the session-sender sends formatted UDP test packets to the session-reflector or receiver. Returned packets contain sequence and timing information used to calculate delay, jitter, and loss; packet padding may be used to control test size. UDP 862 is the registered TWAMP-Test receiver port, although implementations can use negotiated ports for individual sessions.

Security Information

exposure of :862

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 2.7 across 1,213 ports — this one sits 0.7 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

udp

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

security overview

TWAMP traffic is not encrypted by default in its basic unauthenticated mode, and an exposed receiver can be used for unwanted probing, resource consumption, or reflection-style abuse. Restrict the endpoint to authorized measurement systems with ACLs and rate limits; use TWAMP authentication or encryption modes where supported and avoid exposing an unrestricted reflector to the public Internet.

Record

iana registry entry

port: :862
service: TWAMP-Test
transport: UDP
encryption: cleartext
assignment: iana registered
risk: 2/10safe
category: Network Services
usage: TWAMP-Test is the UDP measurement endpoint used by Two-Way Active Measurement Protocol sessions to exchange timestamped test packets with a reflector. A TWAMP-Control connection normally uses TCP 862 to negotiate the test session, while the measurement traffic uses UDP 862 or a negotiated test port.
lookups: 0rank 994
added: 2026-09-16
updated: 2026-09-16
references: IANA service name registry — port 862
RFC 8545

Something wrong?

This record is maintained by the engineers who use port 862. 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 2026-09-16.

01edit any field on a page of its own
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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 :862TWAMP-Test

Technical Details

Security Information

Related Ports

Port 862TWAMP-Test