CyberHunter
Local dataset, no network
// Other services

Port 2874: DX Message Base Transport Protocol

Port 2874 is assigned by IANA to dxmessagebase1 (DX Message Base Transport Protocol).

2874

How dxmessagebase1 works

Other services
client:2874dxmessagebase1response client:2874dxmessagebase1response

The client sends a request to port 2874 and the dxmessagebase1 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 2874 dangerous?

We have no specific security note for port 2874. 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 2874

ServicePortTransportDescriptionReferenceUpdated
dxmessagebase1 2874 TCP, UDP DX Message Base Transport Protocol - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 2874, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2874'      # process listening on 2874
sudo lsof -nP -i :2874

macOS

sudo lsof -nP -i :2874

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2874 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2874
netstat -ano | findstr :2874

From another machine

nmap -p 2874 -sV <host>
sudo nmap -sU -p 2874 <host>
nc -zv <host> 2874

Block it in the firewall

sudo ufw deny 2874/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2874" -Direction Inbound -LocalPort 2874 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2874 used for?

Port 2874 is assigned by IANA to dxmessagebase1 (DX Message Base Transport Protocol).

Is port 2874 TCP or UDP?

Port 2874 is registered for TCP and UDP.

Is it safe to open port 2874?

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 2874 is open?

On Linux run "ss -ltnup 'sport = :2874'", on macOS "lsof -nP -i :2874", and on Windows "netstat -ano | findstr :2874" to see the local process. From another machine, "nmap -p 2874 <host>" shows whether it is reachable.

05 Related
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