CyberHunter
Local dataset, no network
// Other services

Port 3626: bvControl Daemon

Port 3626 is assigned by IANA to bvcdaemon-port (bvControl Daemon).

3626

How bvcdaemon-port works

Other services
client:3626bvcdaemon-portresponse client:3626bvcdaemon-portresponse

The client sends a request to port 3626 and the bvcdaemon-port 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 3626 dangerous?

We have no specific security note for port 3626. 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 3626

ServicePortTransportDescriptionReferenceUpdated
bvcdaemon-port 3626 TCP, UDP bvControl Daemon - 2002-10

// source: IANA service name and port number registry

03 Check it

Which program uses port 3626, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3626'      # process listening on 3626
sudo lsof -nP -i :3626

macOS

sudo lsof -nP -i :3626

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3626 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3626
netstat -ano | findstr :3626

From another machine

nmap -p 3626 -sV <host>
sudo nmap -sU -p 3626 <host>
nc -zv <host> 3626

Block it in the firewall

sudo ufw deny 3626/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3626" -Direction Inbound -LocalPort 3626 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3626 used for?

Port 3626 is assigned by IANA to bvcdaemon-port (bvControl Daemon).

Is port 3626 TCP or UDP?

Port 3626 is registered for TCP and UDP.

Is it safe to open port 3626?

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 3626 is open?

On Linux run "ss -ltnup 'sport = :3626'", on macOS "lsof -nP -i :3626", and on Windows "netstat -ano | findstr :3626" to see the local process. From another machine, "nmap -p 3626 <host>" shows whether it is reachable.

05 Related
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