Port 3487LISA TCP Transfer Channel

TCP/3487 is assigned to the LISA TCP Transfer Channel, but no registered holder or widely documented deployment is known.

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

also known as ltctcp

1 other service is registered on port 3487. compare all 2 →

Technical Details

what runs on :3487

LISA TCP Transfer Channel is registered on port :3487 over tcp. 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 :3487

this machine

# linux
sudo ss -tlpn 'sport = :3487'

# macos / bsd
sudo lsof -nP -i :3487

# windows (then: tasklist /FI "PID eq <pid>")
netstat -ano | findstr :3487

another host

nmap -sV -p T:3487 <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 :3487

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 :3487 yet

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

Record

iana registry entry

port: :3487
service: LISA TCP Transfer Channel
transport: TCP
encryption: cleartext
assignment: iana registered
risk: 1/10safe
category: uncategorised
usage: IANA identifies TCP/3487 as the LISA TCP Transfer Channel, but records no registrant. No broadly encountered implementation is known, and the port was never observed open in the supplied Nmap scan data.
lookups: 0rank 993
added: 2026-09-29
updated: 2026-09-29
references: IANA service name registry — port 3487

Something wrong?

This record is maintained by the engineers who use port 3487. 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 2026-09-29.

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

browse categories →

ports registered around :3487, by lookups.

port	service	proto	category	risk	views
:3424	Xware xTrm over SSL	TCPtls	Security	caution	13.1k
:3483	Slim Devices Discovery	UDP	Streaming	caution	9.7k
:3483	SlimProto	TCP	Streaming	caution	9.0k
:3423	Xware xTrm Protocol	TCP	Network Services	caution	8.7k
:3455	RSVP Protocol	TCPUDP	Network Services	caution	8.2k
:3516	Smartcard Service	TCPUDP	Security	caution	8.0k
:3544	Teredo	UDP	Security	caution	7.8k
:3527	MSMQ	UDP	Network Services	caution	7.3k

risk mix of the 8 listed

caution100%

1 of 8 encrypted

Port :3487LISA TCP Transfer Channel

Technical Details

Security Information

Related Ports

Port 3487LISA TCP Transfer Channel