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// Other services

Port 36412: S1-Control Plane (3GPP)

Port 36412 is assigned by IANA to s1-control (S1-Control Plane (3GPP)).

36412

How s1-control works

Other services
client:36412s1-controlresponse client:36412s1-controlresponse

The client sends a request to port 36412 and the s1-control 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 36412 dangerous?

We have no specific security note for port 36412. 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 36412

ServicePortTransportDescriptionReferenceUpdated
s1-control 36412 SCTP S1-Control Plane (3GPP) - 2009-09-01
-36412-Reserved--

// source: IANA service name and port number registry

03 Check it

Which program uses port 36412, and is it reachable?

Linux

sudo ss -ltnup 'sport = :36412'      # process listening on 36412
sudo lsof -nP -i :36412

macOS

sudo lsof -nP -i :36412

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 36412 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 36412
netstat -ano | findstr :36412

From another machine

nmap -p 36412 -sV <host>
nc -zv <host> 36412

Block it in the firewall

sudo ufw deny 36412/sctp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 36412" -Direction Inbound -LocalPort 36412 -Protocol SCTP -Action Block  # Windows
04 FAQ
What is port 36412 used for?

Port 36412 is assigned by IANA to s1-control (S1-Control Plane (3GPP)).

Is port 36412 TCP or UDP?

Port 36412 is registered for SCTP.

Is it safe to open port 36412?

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 36412 is open?

On Linux run "ss -ltnup 'sport = :36412'", on macOS "lsof -nP -i :36412", and on Windows "netstat -ano | findstr :36412" to see the local process. From another machine, "nmap -p 36412 <host>" shows whether it is reachable.

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