Port 2476ACE Server Propagation

A legacy service assignment for propagating data between ACE Server systems, associated with RSA SecurID deployments.

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

also known as ace-svr-prop

Technical Details

what runs on :2476

ACE Server Propagation is registered on port :2476 over tcp and udp. 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 :2476

this machine

# linux
sudo ss -tulpn 'sport = :2476'

# macos / bsd
sudo lsof -nP -i :2476

# windows (then: tasklist /FI "PID eq <pid>")
netstat -ano | findstr :2476

another host

nmap -sV -p T:2476 <host>
sudo nmap -sU -sV -p U:2476 <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 :2476

risk score

1/ 10safe

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

security averages 3.1 across 346 ports — this one sits 2.1 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 :2476 yet

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

Record

iana registry entry

port: :2476
service: ACE Server Propagation
transport: TCPUDP
encryption: cleartext
assignment: iana registered
risk: 1/10safe
category: Security
usage: The IANA assignment identifies ACE Server Propagation, historically associated with RSA ACE/Server and SecurID. The registry records no assignee, and this port is not commonly observed open in internet scans.
lookups: 0rank 993
added: 2026-09-22
updated: 2026-09-22
references: IANA service name registry — port 2476

Something wrong?

This record is maintained by the engineers who use port 2476. 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 2026-09-22.

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 346 in security →

the 8 most looked-up other ports in security — 346 ports carry that label.

port	service	proto	category	risk	views
:8881	Atlasz Secure Server	TCP	Web Services	caution	67.6k
:443	HTTPS	TCPtls	Web Services	caution	65.9k
:8291	Winbox MikroTik Admin	TCP	Security	caution	62.9k
:3268	Microsoft Global Catalog (GC)	TCPUDP	Security	caution	54.6k
:135	Microsoft EPMAP	TCPUDP	Security	caution	51.9k
:3128	Squid Proxy HTTP	TCP	Web Services	caution	45.8k
:8080	HTTP Alternate	TCP	Web Services	caution	44.9k
:7000	Vuze HTTPS Tracker	TCPtls	Security	caution	28.9k

risk mix of the 8 listed

caution100%

2 of 8 encrypted

Port :2476ACE Server Propagation

Technical Details

Security Information

Related Ports

Port 2476ACE Server Propagation