CyberHunter
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// Other services

Port 3444: Denali Server

Port 3444 is assigned by IANA to denali-server (Denali Server).

3444

How denali-server works

Other services
client:3444denali-serverresponse client:3444denali-serverresponse

The client sends a request to port 3444 and the denali-server 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 3444 dangerous?

We have no specific security note for port 3444. 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 3444

ServicePortTransportDescriptionReferenceUpdated
denali-server 3444 TCP, UDP Denali Server - 2002-03

// source: IANA service name and port number registry

03 Check it

Which program uses port 3444, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3444'      # process listening on 3444
sudo lsof -nP -i :3444

macOS

sudo lsof -nP -i :3444

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3444 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3444
netstat -ano | findstr :3444

From another machine

nmap -p 3444 -sV <host>
sudo nmap -sU -p 3444 <host>
nc -zv <host> 3444

Block it in the firewall

sudo ufw deny 3444/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3444" -Direction Inbound -LocalPort 3444 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3444 used for?

Port 3444 is assigned by IANA to denali-server (Denali Server).

Is port 3444 TCP or UDP?

Port 3444 is registered for TCP and UDP.

Is it safe to open port 3444?

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 3444 is open?

On Linux run "ss -ltnup 'sport = :3444'", on macOS "lsof -nP -i :3444", and on Windows "netstat -ano | findstr :3444" to see the local process. From another machine, "nmap -p 3444 <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

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