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// Other services

Port 36444: M3 Application Part

Port 36444 is assigned by IANA to m3ap (M3 Application Part).

36444

How m3ap works

Other services
client:36444m3apresponse client:36444m3apresponse

The client sends a request to port 36444 and the m3ap service answers.

Transport
SCTP
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 36444 dangerous?

We have no specific security note for port 36444. 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 36444

ServicePortTransportDescriptionReferenceUpdated
m3ap 36444 SCTP M3 Application Part - 2011-02-07

// source: IANA service name and port number registry

03 Check it

Which program uses port 36444, and is it reachable?

Linux

sudo ss -ltnup 'sport = :36444'      # process listening on 36444
sudo lsof -nP -i :36444

macOS

sudo lsof -nP -i :36444

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 36444 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 36444
netstat -ano | findstr :36444

From another machine

nmap -p 36444 -sV <host>
nc -zv <host> 36444

Block it in the firewall

sudo ufw deny 36444/sctp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 36444" -Direction Inbound -LocalPort 36444 -Protocol SCTP -Action Block  # Windows
04 FAQ
What is port 36444 used for?

Port 36444 is assigned by IANA to m3ap (M3 Application Part).

Is port 36444 TCP or UDP?

Port 36444 is registered for SCTP.

Is it safe to open port 36444?

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 36444 is open?

On Linux run "ss -ltnup 'sport = :36444'", on macOS "lsof -nP -i :36444", and on Windows "netstat -ano | findstr :36444" to see the local process. From another machine, "nmap -p 36444 <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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