CyberHunter
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// Other services

Port 3922: Soronti Update Port

Port 3922 is assigned by IANA to sor-update (Soronti Update Port).

3922

How sor-update works

Other services
client:3922sor-updateresponse client:3922sor-updateresponse

The client sends a request to port 3922 and the sor-update 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 3922 dangerous?

We have no specific security note for port 3922. 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 3922

ServicePortTransportDescriptionReferenceUpdated
sor-update 3922 TCP, UDP Soronti Update Port - 2003-11

// source: IANA service name and port number registry

03 Check it

Which program uses port 3922, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3922'      # process listening on 3922
sudo lsof -nP -i :3922

macOS

sudo lsof -nP -i :3922

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3922 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3922
netstat -ano | findstr :3922

From another machine

nmap -p 3922 -sV <host>
sudo nmap -sU -p 3922 <host>
nc -zv <host> 3922

Block it in the firewall

sudo ufw deny 3922/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3922" -Direction Inbound -LocalPort 3922 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3922 used for?

Port 3922 is assigned by IANA to sor-update (Soronti Update Port).

Is port 3922 TCP or UDP?

Port 3922 is registered for TCP and UDP.

Is it safe to open port 3922?

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 3922 is open?

On Linux run "ss -ltnup 'sport = :3922'", on macOS "lsof -nP -i :3922", and on Windows "netstat -ano | findstr :3922" to see the local process. From another machine, "nmap -p 3922 <host>" shows whether it is reachable.

05 Related
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