Port 8567DOF Tunneling Protocol

Port 8567 is assigned to the OpenDOF DOF Tunneling Protocol, though its wire behavior and deployment are not well documented.

inNetwork Services

transport: tcp · udp
in transit: cleartext
assignment: official
risk: 1/10
lookups: 0

also known as OpenDOF

Technical Details

what runs on :8567

DOF Tunneling Protocol is registered on port :8567 over tcp and udp to OpenDOF, assigned August 2005. We don't have a technical write-up for it beyond the IANA registry entry.

In nmap's internet-wide scan data this port is never observed open, so if it's open on your network it's more likely a custom or misconfigured service than the registered one.

find what's listening on :8567

this machine

# linux
sudo ss -tulpn 'sport = :8567'

# macos / bsd
sudo lsof -nP -i :8567

# windows (then: tasklist /FI "PID eq <pid>")
netstat -ano | findstr :8567

another host

nmap -sV -p T:8567 <host>
sudo nmap -sU -sV -p U:8567 <host>

run it? the handshake, the implementations you meet in the wild and the flags that matter come from the engineers who do.

add technical details

Security Information

exposure of :8567

risk score

1/ 10safe

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

network services averages 2.6 across 1,823 ports — this one sits 1.6 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 · udp

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

security overview

no security notes recorded for :8567 yet

known exploits, hardening advice, what a compromise looks like — suggest an edit if you know its exposure.

Record

iana registry entry

port: :8567
service: DOF Tunneling Protocol
transport: TCPUDP
encryption: cleartext
assignment: iana registered
risk: 1/10safe
category: Network Services
usage: IANA assigns TCP and UDP port 8567 to the DOF Tunneling Protocol and lists OpenDOF as the registrant. I could not establish a widely deployed implementation or a reliable description of what an active listener does.
lookups: 0rank 993
added: 2026-10-14
updated: 2026-10-14
references: IANA service name registry — port 8567

Something wrong?

This record is maintained by the engineers who use port 8567. 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 2026-10-14.

01edit any field on a page of its own
02a model checks it for accuracy and spam
03clean and confident goes live immediately

edit this record →back to the registry

Related Ports

all 1,823 in network services →

the 8 most looked-up other ports in network services — 1,823 ports carry that label.

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:9080	Groove RPC	TCPUDP	Web Services	caution	70.8k
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:5938	TeamViewer	TCPUDP	Remote Access	caution	65.0k
:8291	Winbox MikroTik Admin	TCP	Security	caution	62.9k
:3233	WhiskerControl Protocol	TCPUDP	Network Services	caution	61.9k
:3268	Microsoft Global Catalog (GC)	TCPUDP	Security	caution	54.6k
:135	Microsoft EPMAP	TCPUDP	Security	caution	51.9k
:3128	Tatsoft Default HTTP Proxy	TCP	Web Services	caution	46.8k

risk mix of the 8 listed

caution100%

0 of 8 encrypted

Port :8567DOF Tunneling Protocol

Technical Details

Security Information

Related Ports

Port 8567DOF Tunneling Protocol