CyberHunter
LinkedIn profile - Bastien Cordier Email: contact@bastiencordier.pro
// Other services

Port 16384: Connected Corp

Port 16384 is assigned by IANA to connected (Connected Corp).

16384

How connected works

Other services
client:16384connectedresponse client:16384connectedresponse

The client sends a request to port 16384 and the connected 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 16384 dangerous?

We have no specific security note for port 16384. 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 16384

ServicePortTransportDescriptionReferenceUpdated
connected 16384 TCP, UDP Connected Corp - 2004-02

// source: IANA service name and port number registry

03 Check it

Which program uses port 16384, and is it reachable?

Linux

sudo ss -ltnup 'sport = :16384'      # process listening on 16384
sudo lsof -nP -i :16384

macOS

sudo lsof -nP -i :16384

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 16384 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 16384
netstat -ano | findstr :16384

From another machine

nmap -p 16384 -sV <host>
sudo nmap -sU -p 16384 <host>
nc -zv <host> 16384

Block it in the firewall

sudo ufw deny 16384/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 16384" -Direction Inbound -LocalPort 16384 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 16384 used for?

Port 16384 is assigned by IANA to connected (Connected Corp).

Is port 16384 TCP or UDP?

Port 16384 is registered for TCP and UDP.

Is it safe to open port 16384?

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 16384 is open?

On Linux run "ss -ltnup 'sport = :16384'", on macOS "lsof -nP -i :16384", and on Windows "netstat -ano | findstr :16384" to see the local process. From another machine, "nmap -p 16384 <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