CyberHunter
Local dataset, no network
// Other services

Port 2672: nhserver

Port 2672 is assigned by IANA to nhserver (nhserver).

2672

How nhserver works

Other services
client:2672nhserverresponse client:2672nhserverresponse

The client sends a request to port 2672 and the nhserver 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 2672 dangerous?

We have no specific security note for port 2672. 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 2672

ServicePortTransportDescriptionReferenceUpdated
nhserver 2672 TCP, UDP nhserver - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 2672, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2672'      # process listening on 2672
sudo lsof -nP -i :2672

macOS

sudo lsof -nP -i :2672

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2672 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2672
netstat -ano | findstr :2672

From another machine

nmap -p 2672 -sV <host>
sudo nmap -sU -p 2672 <host>
nc -zv <host> 2672

Block it in the firewall

sudo ufw deny 2672/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2672" -Direction Inbound -LocalPort 2672 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2672 used for?

Port 2672 is assigned by IANA to nhserver (nhserver).

Is port 2672 TCP or UDP?

Port 2672 is registered for TCP and UDP.

Is it safe to open port 2672?

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 2672 is open?

On Linux run "ss -ltnup 'sport = :2672'", on macOS "lsof -nP -i :2672", and on Windows "netstat -ano | findstr :2672" to see the local process. From another machine, "nmap -p 2672 <host>" shows whether it is reachable.

05 Related
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