Port 6501BoKS Servc

BoKS Servc is the historic service name associated with TCP and UDP port 6501; the port is not seen open in Nmap scan data.

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

Technical Details

what runs on :6501

BoKS Servc is registered on port :6501 over tcp and udp to Magnus Nystrom. 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.

IANA has recorded this port being used for something it was not assigned for.

find what's listening on :6501

this machine

# linux
sudo ss -tulpn 'sport = :6501'

# macos / bsd
sudo lsof -nP -i :6501

# windows (then: tasklist /FI "PID eq <pid>")
netstat -ano | findstr :6501

another host

nmap -sV -p T:6501 <host>
sudo nmap -sU -sV -p U:6501 <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 :6501

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 · udp

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

security overview

no security notes recorded for :6501 yet

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

Record

iana registry entry

port: :6501
service: BoKS Servc
transport: TCPUDP
encryption: cleartext
assignment: iana registered
risk: 1/10safe
category: uncategorised
usage: The IANA label is “BoKS Servc,” assigned to Magnus Nystrom, with the registry alias “boks-servc.” The assignment is marked historic, and IANA reports unauthorized use.
lookups: 0rank 993
added: 2026-10-10
updated: 2026-10-10
references: IANA service name registry — port 6501

Something wrong?

This record is maintained by the engineers who use port 6501. 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 2026-10-10.

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 :6501, by lookups.

port	service	proto	category	risk	views
:6543	Jetnet	UDP	Network Services	caution	65.3k
:6522	Gobby Collaboration	TCP	Remote Access	caution	10.5k
:6523	Gobby Collaborative Editing	TCP	Network Services	caution	10.4k
:6502	Netop Remote Control	TCPUDP	Security	caution	9.1k
:6444	SGE Qmaster	TCPUDP	Network Services	caution	8.8k
:6445	Sun Grid Engine Exec	TCPUDP	System	caution	8.1k
:6503	Netop School	UDP	Remote Access	caution	4.7k
:6503	BoKS Clntd	TCPUDP	System	safe	0

risk mix of the 8 listed

safe13%
caution88%

0 of 8 encrypted

Port :6501BoKS Servc

Technical Details

Security Information

Related Ports

Port 6501BoKS Servc