Port 6678Viscount Freedom Bridge Protocol

TCP port 6678 is assigned to the Viscount Freedom Bridge Protocol, registered to Chris MacDonald.

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

also known as vfbp

1 other service is registered on port 6678. compare all 2 →

Technical Details

what runs on :6678

Viscount Freedom Bridge Protocol is registered on port :6678 over tcp to Chris MacDonald, assigned March 2011. 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 :6678

this machine

# linux
sudo ss -tlpn 'sport = :6678'

# macos / bsd
sudo lsof -nP -i :6678

# windows (then: tasklist /FI "PID eq <pid>")
netstat -ano | findstr :6678

another host

nmap -sV -p T:6678 <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 :6678

risk score

1/ 10safe

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

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

no security notes recorded for :6678 yet

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

Record

iana registry entry

port: :6678
service: Viscount Freedom Bridge Protocol
transport: TCP
encryption: cleartext
assignment: iana registered
risk: 1/10safe
category: uncategorised
usage: IANA assigns TCP port 6678 to the Viscount Freedom Bridge Protocol and lists Chris MacDonald as the registrant. No common deployment or independently established behavior is known.
lookups: 0rank 993
added: 2026-10-11
updated: 2026-10-11
references: IANA service name registry — port 6678

Something wrong?

This record is maintained by the engineers who use port 6678. 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 2026-10-11.

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

browse categories →

ports registered around :6678, by lookups.

port	service	proto	category	risk	views
:6697	IRC over SSL	TCPtls	Security	caution	16.4k
:6619	Odette FTPS	TCPUDPtls	Security	caution	16.0k
:6646	McAfee Agent Discovery	UDP	Security	caution	15.8k
:6679	IRC SSL	TCPtls	Security	caution	15.7k
:6665	IRC	TCP	Network Services	caution	10.5k
:6660	IRC	TCP	Voice and Chat	caution	10.2k
:6699	WinMX	TCP	File Transfer	caution	4.5k
:6627	Allied Electronics NeXGen	TCPUDP	—	safe	0

risk mix of the 8 listed

safe13%
caution88%

3 of 8 encrypted

Port :6678Viscount Freedom Bridge Protocol

Technical Details

Security Information

Related Ports

Port 6678Viscount Freedom Bridge Protocol