CyberHunter
Local dataset, no network
// Other services

Port 1882: CA eTrust Common Services

Port 1882 is assigned by IANA to ecsqdmn (CA eTrust Common Services).

1882

How ecsqdmn works

Other services
client:1882ecsqdmnresponse client:1882ecsqdmnresponse

The client sends a request to port 1882 and the ecsqdmn 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 1882 dangerous?

We have no specific security note for port 1882. 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 1882

ServicePortTransportDescriptionReferenceUpdated
ecsqdmn 1882 TCP, UDP CA eTrust Common Services - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1882, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1882'      # process listening on 1882
sudo lsof -nP -i :1882

macOS

sudo lsof -nP -i :1882

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1882 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1882
netstat -ano | findstr :1882

From another machine

nmap -p 1882 -sV <host>
sudo nmap -sU -p 1882 <host>
nc -zv <host> 1882

Block it in the firewall

sudo ufw deny 1882/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1882" -Direction Inbound -LocalPort 1882 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1882 used for?

Port 1882 is assigned by IANA to ecsqdmn (CA eTrust Common Services).

Is port 1882 TCP or UDP?

Port 1882 is registered for TCP and UDP.

Is it safe to open port 1882?

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 1882 is open?

On Linux run "ss -ltnup 'sport = :1882'", on macOS "lsof -nP -i :1882", and on Windows "netstat -ano | findstr :1882" to see the local process. From another machine, "nmap -p 1882 <host>" shows whether it is reachable.

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