CyberHunter
Local dataset, no network
// Other services

Port 1893: ELAD Protocol

Port 1893 is assigned by IANA to elad (ELAD Protocol).

1893

How elad works

Other services
client:1893eladresponse client:1893eladresponse

The client sends a request to port 1893 and the elad 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 1893 dangerous?

We have no specific security note for port 1893. 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 1893

ServicePortTransportDescriptionReferenceUpdated
elad 1893 TCP, UDP ELAD Protocol - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1893, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1893'      # process listening on 1893
sudo lsof -nP -i :1893

macOS

sudo lsof -nP -i :1893

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1893 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1893
netstat -ano | findstr :1893

From another machine

nmap -p 1893 -sV <host>
sudo nmap -sU -p 1893 <host>
nc -zv <host> 1893

Block it in the firewall

sudo ufw deny 1893/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1893" -Direction Inbound -LocalPort 1893 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1893 used for?

Port 1893 is assigned by IANA to elad (ELAD Protocol).

Is port 1893 TCP or UDP?

Port 1893 is registered for TCP and UDP.

Is it safe to open port 1893?

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 1893 is open?

On Linux run "ss -ltnup 'sport = :1893'", on macOS "lsof -nP -i :1893", and on Windows "netstat -ano | findstr :1893" to see the local process. From another machine, "nmap -p 1893 <host>" shows whether it is reachable.

05 Related
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