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// Other services

Port 3711: EBD Server 2

Port 3711 is assigned by IANA to edb-server2 (EBD Server 2).

3711

How edb-server2 works

Other services
client:3711edb-server2response client:3711edb-server2response

The client sends a request to port 3711 and the edb-server2 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 3711 dangerous?

We have no specific security note for port 3711. 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 3711

ServicePortTransportDescriptionReferenceUpdated
edb-server2 3711 TCP, UDP EBD Server 2 - 2003-02

// source: IANA service name and port number registry

03 Check it

Which program uses port 3711, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3711'      # process listening on 3711
sudo lsof -nP -i :3711

macOS

sudo lsof -nP -i :3711

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3711 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3711
netstat -ano | findstr :3711

From another machine

nmap -p 3711 -sV <host>
sudo nmap -sU -p 3711 <host>
nc -zv <host> 3711

Block it in the firewall

sudo ufw deny 3711/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3711" -Direction Inbound -LocalPort 3711 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3711 used for?

Port 3711 is assigned by IANA to edb-server2 (EBD Server 2).

Is port 3711 TCP or UDP?

Port 3711 is registered for TCP and UDP.

Is it safe to open port 3711?

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 3711 is open?

On Linux run "ss -ltnup 'sport = :3711'", on macOS "lsof -nP -i :3711", and on Windows "netstat -ano | findstr :3711" to see the local process. From another machine, "nmap -p 3711 <host>" shows whether it is reachable.

05 Related
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