CyberHunter
Local dataset, no network
// Other services

Port 3790: QuickBooks RDS

Port 3790 is assigned by IANA to quickbooksrds (QuickBooks RDS).

3790

How quickbooksrds works

Other services
client:3790quickbooksrdsresponse client:3790quickbooksrdsresponse

The client sends a request to port 3790 and the quickbooksrds 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 3790 dangerous?

We have no specific security note for port 3790. 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 3790

ServicePortTransportDescriptionReferenceUpdated
quickbooksrds 3790 TCP, UDP QuickBooks RDS - 2003-07

// source: IANA service name and port number registry

03 Check it

Which program uses port 3790, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3790'      # process listening on 3790
sudo lsof -nP -i :3790

macOS

sudo lsof -nP -i :3790

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3790 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3790
netstat -ano | findstr :3790

From another machine

nmap -p 3790 -sV <host>
sudo nmap -sU -p 3790 <host>
nc -zv <host> 3790

Block it in the firewall

sudo ufw deny 3790/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3790" -Direction Inbound -LocalPort 3790 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3790 used for?

Port 3790 is assigned by IANA to quickbooksrds (QuickBooks RDS).

Is port 3790 TCP or UDP?

Port 3790 is registered for TCP and UDP.

Is it safe to open port 3790?

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 3790 is open?

On Linux run "ss -ltnup 'sport = :3790'", on macOS "lsof -nP -i :3790", and on Windows "netstat -ano | findstr :3790" to see the local process. From another machine, "nmap -p 3790 <host>" shows whether it is reachable.

05 Related
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