CyberHunter
Local dataset, no network
// Other services

Port 3485: CelaTalk

Port 3485 is assigned by IANA to celatalk (CelaTalk).

3485

How celatalk works

Other services
client:3485celatalkresponse client:3485celatalkresponse

The client sends a request to port 3485 and the celatalk service answers.

Transport
TCP · UDP
Exposure risk
not rated depends on the program listening
Encryption
Unknownnot stated by the registry
IANA status
Assigned1 registered service
Range
Registered (1024-49151)
Category
Other services
01 Security

Is port 3485 dangerous?

We have no specific security note for port 3485. Its risk depends on the program actually listening on it. General advice for other services services:

  • Close the port if nothing on the host needs it.
  • Identify the process that listens on it (commands below) before opening it in a firewall.
  • Expose a service only to the networks that use it.
02 Registry

IANA registry entries for port 3485

ServicePortTransportDescriptionReferenceUpdated
celatalk 3485 TCP, UDP CelaTalk - 2002-05

// source: IANA service name and port number registry

03 Check it

Which program uses port 3485, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3485'      # process listening on 3485
sudo lsof -nP -i :3485

macOS

sudo lsof -nP -i :3485

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3485 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3485
netstat -ano | findstr :3485

From another machine

nmap -p 3485 -sV <host>
sudo nmap -sU -p 3485 <host>
nc -zv <host> 3485

Block it in the firewall

sudo ufw deny 3485/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3485" -Direction Inbound -LocalPort 3485 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3485 used for?

Port 3485 is assigned by IANA to celatalk (CelaTalk).

Is port 3485 TCP or UDP?

Port 3485 is registered for TCP and UDP.

Is it safe to open port 3485?

It depends on the program that listens on it. Open it only for a service you know and only to the networks that need it. Close the port if nothing on the host needs it.

How do I check if port 3485 is open?

On Linux run "ss -ltnup 'sport = :3485'", on macOS "lsof -nP -i :3485", and on Windows "netstat -ano | findstr :3485" to see the local process. From another machine, "nmap -p 3485 <host>" shows whether it is reachable.

05 Related
:4444 Metasploit default / krb524 tcp · udp · high risk :31337 Back Orifice / elite tcp · udp · high risk :1 TCP Port Service Multiplexer tcp · udp :5 Remote Job Entry tcp · udp :9 Discard tcp · udp · sctp · dccp :11 Active Users tcp · udp :17 Quote of the Day tcp · udp :18 Message Send Protocol (historic) tcp · udp

Latest vulnerability news

All news