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// Other services

Port 2231: WiMAX ASN Control Plane Protocol

Port 2231 is assigned by IANA to wimaxasncp (WiMAX ASN Control Plane Protocol).

2231

How wimaxasncp works

Other services
client:2231wimaxasncpresponse client:2231wimaxasncpresponse

The client sends a request to port 2231 and the wimaxasncp 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 2231 dangerous?

We have no specific security note for port 2231. 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 2231

ServicePortTransportDescriptionReferenceUpdated
wimaxasncp 2231 TCP, UDP WiMAX ASN Control Plane Protocol - 2006-06

// source: IANA service name and port number registry

03 Check it

Which program uses port 2231, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2231'      # process listening on 2231
sudo lsof -nP -i :2231

macOS

sudo lsof -nP -i :2231

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2231 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2231
netstat -ano | findstr :2231

From another machine

nmap -p 2231 -sV <host>
sudo nmap -sU -p 2231 <host>
nc -zv <host> 2231

Block it in the firewall

sudo ufw deny 2231/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2231" -Direction Inbound -LocalPort 2231 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2231 used for?

Port 2231 is assigned by IANA to wimaxasncp (WiMAX ASN Control Plane Protocol).

Is port 2231 TCP or UDP?

Port 2231 is registered for TCP and UDP.

Is it safe to open port 2231?

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 2231 is open?

On Linux run "ss -ltnup 'sport = :2231'", on macOS "lsof -nP -i :2231", and on Windows "netstat -ano | findstr :2231" to see the local process. From another machine, "nmap -p 2231 <host>" shows whether it is reachable.

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