CyberHunter
Local dataset, no network
// Other services

Port 3853: SONY scanning protocol

Port 3853 is assigned by IANA to sscan (SONY scanning protocol).

3853

How sscan works

Other services
client:3853sscanresponse client:3853sscanresponse

The client sends a request to port 3853 and the sscan 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 3853 dangerous?

We have no specific security note for port 3853. 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 3853

ServicePortTransportDescriptionReferenceUpdated
sscan 3853 TCP, UDP SONY scanning protocol - 2003-08

// source: IANA service name and port number registry

03 Check it

Which program uses port 3853, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3853'      # process listening on 3853
sudo lsof -nP -i :3853

macOS

sudo lsof -nP -i :3853

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3853 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3853
netstat -ano | findstr :3853

From another machine

nmap -p 3853 -sV <host>
sudo nmap -sU -p 3853 <host>
nc -zv <host> 3853

Block it in the firewall

sudo ufw deny 3853/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3853" -Direction Inbound -LocalPort 3853 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3853 used for?

Port 3853 is assigned by IANA to sscan (SONY scanning protocol).

Is port 3853 TCP or UDP?

Port 3853 is registered for TCP and UDP.

Is it safe to open port 3853?

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 3853 is open?

On Linux run "ss -ltnup 'sport = :3853'", on macOS "lsof -nP -i :3853", and on Windows "netstat -ano | findstr :3853" to see the local process. From another machine, "nmap -p 3853 <host>" shows whether it is reachable.

05 Related
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