CyberHunter
Local dataset, no network
// Other services

Port 3882: DTS Service Port

Port 3882 is assigned by IANA to msdts1 (DTS Service Port).

3882

How msdts1 works

Other services
client:3882msdts1response client:3882msdts1response

The client sends a request to port 3882 and the msdts1 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 3882 dangerous?

We have no specific security note for port 3882. 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 3882

ServicePortTransportDescriptionReferenceUpdated
msdts1 3882 TCP, UDP DTS Service Port - 2003-10

// source: IANA service name and port number registry

03 Check it

Which program uses port 3882, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3882'      # process listening on 3882
sudo lsof -nP -i :3882

macOS

sudo lsof -nP -i :3882

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3882 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3882
netstat -ano | findstr :3882

From another machine

nmap -p 3882 -sV <host>
sudo nmap -sU -p 3882 <host>
nc -zv <host> 3882

Block it in the firewall

sudo ufw deny 3882/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3882" -Direction Inbound -LocalPort 3882 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3882 used for?

Port 3882 is assigned by IANA to msdts1 (DTS Service Port).

Is port 3882 TCP or UDP?

Port 3882 is registered for TCP and UDP.

Is it safe to open port 3882?

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 3882 is open?

On Linux run "ss -ltnup 'sport = :3882'", on macOS "lsof -nP -i :3882", and on Windows "netstat -ano | findstr :3882" to see the local process. From another machine, "nmap -p 3882 <host>" shows whether it is reachable.

05 Related
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