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// Other services

Port 3712: Sentinel Enterprise

Port 3712 is assigned by IANA to sentinel-ent (Sentinel Enterprise).

3712

How sentinel-ent works

Other services
client:3712sentinel-entresponse client:3712sentinel-entresponse

The client sends a request to port 3712 and the sentinel-ent 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 3712 dangerous?

We have no specific security note for port 3712. 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 3712

ServicePortTransportDescriptionReferenceUpdated
sentinel-ent 3712 TCP, UDP Sentinel Enterprise - 2003-03

// source: IANA service name and port number registry

03 Check it

Which program uses port 3712, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3712'      # process listening on 3712
sudo lsof -nP -i :3712

macOS

sudo lsof -nP -i :3712

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3712 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3712
netstat -ano | findstr :3712

From another machine

nmap -p 3712 -sV <host>
sudo nmap -sU -p 3712 <host>
nc -zv <host> 3712

Block it in the firewall

sudo ufw deny 3712/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3712" -Direction Inbound -LocalPort 3712 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3712 used for?

Port 3712 is assigned by IANA to sentinel-ent (Sentinel Enterprise).

Is port 3712 TCP or UDP?

Port 3712 is registered for TCP and UDP.

Is it safe to open port 3712?

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 3712 is open?

On Linux run "ss -ltnup 'sport = :3712'", on macOS "lsof -nP -i :3712", and on Windows "netstat -ano | findstr :3712" to see the local process. From another machine, "nmap -p 3712 <host>" shows whether it is reachable.

05 Related
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