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// Other services

Port 3031: Remote AppleEvents/PPC Toolbox

Port 3031 is assigned by IANA to eppc (Remote AppleEvents/PPC Toolbox).

3031

How eppc works

Other services
client:3031eppcresponse client:3031eppcresponse

The client sends a request to port 3031 and the eppc 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 3031 dangerous?

We have no specific security note for port 3031. 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 3031

ServicePortTransportDescriptionReferenceUpdated
eppc 3031 TCP, UDP Remote AppleEvents/PPC Toolbox - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 3031, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3031'      # process listening on 3031
sudo lsof -nP -i :3031

macOS

sudo lsof -nP -i :3031

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3031 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3031
netstat -ano | findstr :3031

From another machine

nmap -p 3031 -sV <host>
sudo nmap -sU -p 3031 <host>
nc -zv <host> 3031

Block it in the firewall

sudo ufw deny 3031/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3031" -Direction Inbound -LocalPort 3031 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3031 used for?

Port 3031 is assigned by IANA to eppc (Remote AppleEvents/PPC Toolbox).

Is port 3031 TCP or UDP?

Port 3031 is registered for TCP and UDP.

Is it safe to open port 3031?

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 3031 is open?

On Linux run "ss -ltnup 'sport = :3031'", on macOS "lsof -nP -i :3031", and on Windows "netstat -ano | findstr :3031" to see the local process. From another machine, "nmap -p 3031 <host>" shows whether it is reachable.

05 Related
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