CyberHunter
Local dataset, no network
// Other services

Port 3754: TimesTen Broker Port

Port 3754 is assigned by IANA to timestenbroker (TimesTen Broker Port).

3754

How timestenbroker works

Other services
client:3754timestenbrokerresponse client:3754timestenbrokerresponse

The client sends a request to port 3754 and the timestenbroker 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 3754 dangerous?

We have no specific security note for port 3754. 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 3754

ServicePortTransportDescriptionReferenceUpdated
timestenbroker 3754 TCP, UDP TimesTen Broker Port - 2003-04

// source: IANA service name and port number registry

03 Check it

Which program uses port 3754, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3754'      # process listening on 3754
sudo lsof -nP -i :3754

macOS

sudo lsof -nP -i :3754

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3754 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3754
netstat -ano | findstr :3754

From another machine

nmap -p 3754 -sV <host>
sudo nmap -sU -p 3754 <host>
nc -zv <host> 3754

Block it in the firewall

sudo ufw deny 3754/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3754" -Direction Inbound -LocalPort 3754 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3754 used for?

Port 3754 is assigned by IANA to timestenbroker (TimesTen Broker Port).

Is port 3754 TCP or UDP?

Port 3754 is registered for TCP and UDP.

Is it safe to open port 3754?

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 3754 is open?

On Linux run "ss -ltnup 'sport = :3754'", on macOS "lsof -nP -i :3754", and on Windows "netstat -ano | findstr :3754" to see the local process. From another machine, "nmap -p 3754 <host>" shows whether it is reachable.

05 Related
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