Port 487SAFT (Simple Asynchronous File Transfer)

SAFT provides simple asynchronous file transfer over TCP and UDP.

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

also known as Simple Asynchronous File Transfer

Technical Details

what runs on :487

SAFT (Simple Asynchronous File Transfer) is registered on port :487 over tcp and udp to Ulli Horlacher. 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 found open rarely. What's listening is often not the registered service, so check before you assume.

find what's listening on :487

this machine

# linux
sudo ss -tulpn 'sport = :487'

# macos / bsd
sudo lsof -nP -i :487

# windows (then: tasklist /FI "PID eq <pid>")
netstat -ano | findstr :487

another host

nmap -sV -p T:487 <host>
sudo nmap -sU -sV -p U:487 <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 :487

risk score

1/ 10safe

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

file transfer averages 3.4 across 185 ports — this one sits 2.4 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 :487 yet

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

Record

iana registry entry

port: :487
service: SAFT (Simple Asynchronous File Transfer)
transport: TCPUDP
encryption: cleartext
assignment: iana registered
risk: 1/10safe
category: File Transfer
usage: SAFT is the Simple Asynchronous File Transfer service assigned to TCP and UDP port 487. The assignment is registered to Ulli Horlacher; deployments are uncommon.
lookups: 0rank 993
added: 2026-08-29
updated: 2026-08-29
references: IANA service name registry — port 487

Something wrong?

This record is maintained by the engineers who use port 487. 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 2026-08-29.

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 185 in file transfer →

the 8 most looked-up other ports in file transfer — 185 ports carry that label.

port	service	proto	category	risk	views
:9080	Groove RPC	TCPUDP	Web Services	caution	70.8k
:17500	Dropbox LAN Sync	TCPUDP	File Transfer	caution	43.7k
:548	Apple Filing Protocol	TCP	File Transfer	caution	36.8k
:7000	Vuze HTTPS Tracker	TCPtls	Security	caution	28.9k
:1337	PowerFolder P2P	TCP	Security	caution	27.1k
:9001	SharePoint Authoring		Web Services	caution	26.3k
:8080	FilePhile Relay	UDP	File Transfer	caution	25.6k
:1337	WASTE Encrypted Sharing	TCP	Security	caution	22.9k

risk mix of the 8 listed

caution100%

1 of 8 encrypted

Port :487SAFT (Simple Asynchronous File Transfer)

Technical Details

Security Information

Related Ports

Port 487SAFT (Simple Asynchronous File Transfer)