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

Port 3827: Netadmin Systems MPI service

Port 3827 is assigned by IANA to netmpi (Netadmin Systems MPI service).

3827

How netmpi works

Other services
client:3827netmpiresponse client:3827netmpiresponse

The client sends a request to port 3827 and the netmpi 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 3827 dangerous?

We have no specific security note for port 3827. 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 3827

ServicePortTransportDescriptionReferenceUpdated
netmpi 3827 TCP, UDP Netadmin Systems MPI service - 2007-07-10

// source: IANA service name and port number registry

03 Check it

Which program uses port 3827, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3827'      # process listening on 3827
sudo lsof -nP -i :3827

macOS

sudo lsof -nP -i :3827

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3827 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3827
netstat -ano | findstr :3827

From another machine

nmap -p 3827 -sV <host>
sudo nmap -sU -p 3827 <host>
nc -zv <host> 3827

Block it in the firewall

sudo ufw deny 3827/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3827" -Direction Inbound -LocalPort 3827 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3827 used for?

Port 3827 is assigned by IANA to netmpi (Netadmin Systems MPI service).

Is port 3827 TCP or UDP?

Port 3827 is registered for TCP and UDP.

Is it safe to open port 3827?

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 3827 is open?

On Linux run "ss -ltnup 'sport = :3827'", on macOS "lsof -nP -i :3827", and on Windows "netstat -ano | findstr :3827" to see the local process. From another machine, "nmap -p 3827 <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