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// Other services

Port 2406: JediServer

Port 2406 is assigned by IANA to jediserver (JediServer).

2406

How jediserver works

Other services
client:2406jediserverresponse client:2406jediserverresponse

The client sends a request to port 2406 and the jediserver 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 2406 dangerous?

We have no specific security note for port 2406. 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 2406

ServicePortTransportDescriptionReferenceUpdated
jediserver 2406 TCP, UDP JediServer - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 2406, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2406'      # process listening on 2406
sudo lsof -nP -i :2406

macOS

sudo lsof -nP -i :2406

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2406 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2406
netstat -ano | findstr :2406

From another machine

nmap -p 2406 -sV <host>
sudo nmap -sU -p 2406 <host>
nc -zv <host> 2406

Block it in the firewall

sudo ufw deny 2406/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2406" -Direction Inbound -LocalPort 2406 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2406 used for?

Port 2406 is assigned by IANA to jediserver (JediServer).

Is port 2406 TCP or UDP?

Port 2406 is registered for TCP and UDP.

Is it safe to open port 2406?

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 2406 is open?

On Linux run "ss -ltnup 'sport = :2406'", on macOS "lsof -nP -i :2406", and on Windows "netstat -ano | findstr :2406" to see the local process. From another machine, "nmap -p 2406 <host>" shows whether it is reachable.

05 Related
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