CyberHunter
Local dataset, no network
// Other services

Port 3992: BindView-DirectoryServer

Port 3992 is assigned by IANA to bv-ds (BindView-DirectoryServer).

3992

How bv-ds works

Other services
client:3992bv-dsresponse client:3992bv-dsresponse

The client sends a request to port 3992 and the bv-ds 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 3992 dangerous?

We have no specific security note for port 3992. 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 3992

ServicePortTransportDescriptionReferenceUpdated
bv-ds 3992 TCP, UDP BindView-DirectoryServer - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 3992, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3992'      # process listening on 3992
sudo lsof -nP -i :3992

macOS

sudo lsof -nP -i :3992

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3992 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3992
netstat -ano | findstr :3992

From another machine

nmap -p 3992 -sV <host>
sudo nmap -sU -p 3992 <host>
nc -zv <host> 3992

Block it in the firewall

sudo ufw deny 3992/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3992" -Direction Inbound -LocalPort 3992 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3992 used for?

Port 3992 is assigned by IANA to bv-ds (BindView-DirectoryServer).

Is port 3992 TCP or UDP?

Port 3992 is registered for TCP and UDP.

Is it safe to open port 3992?

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 3992 is open?

On Linux run "ss -ltnup 'sport = :3992'", on macOS "lsof -nP -i :3992", and on Windows "netstat -ano | findstr :3992" to see the local process. From another machine, "nmap -p 3992 <host>" shows whether it is reachable.

05 Related
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