Port 693almanid Connection Endpoint

Port 693 is assigned to the almanid Connection Endpoint service.

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

also known as connendp

Technical Details

what runs on :693

almanid Connection Endpoint is registered on port :693 over tcp and udp to Ronny Bremer. 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 :693

this machine

# linux
sudo ss -tulpn 'sport = :693'

# macos / bsd
sudo lsof -nP -i :693

# windows (then: tasklist /FI "PID eq <pid>")
netstat -ano | findstr :693

another host

nmap -sV -p T:693 <host>
sudo nmap -sU -sV -p U:693 <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 :693

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 :693 yet

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

Record

iana registry entry

port: :693
service: almanid Connection Endpoint
transport: TCPUDP
encryption: cleartext
assignment: iana registered
risk: 1/10safe
category: uncategorised
usage: This assignment identifies TCP and UDP port 693 as almanid Connection Endpoint. It is registered to Ronny Bremer, but public deployment details are not documented.
lookups: 0rank 993
added: 2026-09-16
updated: 2026-09-16
references: IANA service name registry — port 693

Something wrong?

This record is maintained by the engineers who use port 693. 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
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 :693, by lookups.

port	service	proto	category	risk	views
:660	Mac OS X Server Admin	TCP	Remote Access	caution	23.7k
:749	Kerberos Admin	TCPUDP	Security	safe	23.6k
:636	LDAPS	TCPUDPtls	Security	caution	15.6k
:712	TBRPF Protocol	TCP	Network Services	caution	15.0k
:695	IEEE-MMS-SSL	TCPtls	Security	caution	14.3k
:639	MSDP	TCPUDP	Network Services	caution	11.4k
:647	DHCP Failover	TCP	Network Services	caution	11.1k
:654	Media Management Protocol	TCP	Network Services	caution	10.2k

risk mix of the 8 listed

safe13%
caution88%

2 of 8 encrypted

Port :693almanid Connection Endpoint

Technical Details

Security Information

Related Ports

Port 693almanid Connection Endpoint