CyberHunter
LinkedIn profile - Bastien Cordier Email: contact@bastiencordier.pro
// Other services

Port 2764: Data Insurance

Port 2764 is assigned by IANA to data-insurance (Data Insurance).

2764

How data-insurance works

Other services
client:2764data-insuranceresponse client:2764data-insuranceresponse

The client sends a request to port 2764 and the data-insurance 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 2764 dangerous?

We have no specific security note for port 2764. 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 2764

ServicePortTransportDescriptionReferenceUpdated
data-insurance 2764 TCP, UDP Data Insurance - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 2764, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2764'      # process listening on 2764
sudo lsof -nP -i :2764

macOS

sudo lsof -nP -i :2764

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2764 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2764
netstat -ano | findstr :2764

From another machine

nmap -p 2764 -sV <host>
sudo nmap -sU -p 2764 <host>
nc -zv <host> 2764

Block it in the firewall

sudo ufw deny 2764/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2764" -Direction Inbound -LocalPort 2764 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2764 used for?

Port 2764 is assigned by IANA to data-insurance (Data Insurance).

Is port 2764 TCP or UDP?

Port 2764 is registered for TCP and UDP.

Is it safe to open port 2764?

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 2764 is open?

On Linux run "ss -ltnup 'sport = :2764'", on macOS "lsof -nP -i :2764", and on Windows "netstat -ano | findstr :2764" to see the local process. From another machine, "nmap -p 2764 <host>" shows whether it is reachable.

05 Related
:4444 Metasploit default / krb524 tcp · udp · high risk :31337 Back Orifice / elite tcp · udp · high risk :1 TCP Port Service Multiplexer tcp · udp :5 Remote Job Entry tcp · udp :9 Discard tcp · udp · sctp · dccp :11 Active Users tcp · udp :17 Quote of the Day tcp · udp :18 Message Send Protocol (historic) tcp · udp

Latest vulnerability news

All news