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// Other services

Port 1363: Network DataMover Requester

Port 1363 is assigned by IANA to ndm-requester (Network DataMover Requester).

1363

How ndm-requester works

Other services
client:1363ndm-requesterresponse client:1363ndm-requesterresponse

The client sends a request to port 1363 and the ndm-requester 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 1363 dangerous?

We have no specific security note for port 1363. 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 1363

ServicePortTransportDescriptionReferenceUpdated
ndm-requester 1363 TCP, UDP Network DataMover Requester - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1363, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1363'      # process listening on 1363
sudo lsof -nP -i :1363

macOS

sudo lsof -nP -i :1363

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1363 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1363
netstat -ano | findstr :1363

From another machine

nmap -p 1363 -sV <host>
sudo nmap -sU -p 1363 <host>
nc -zv <host> 1363

Block it in the firewall

sudo ufw deny 1363/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1363" -Direction Inbound -LocalPort 1363 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1363 used for?

Port 1363 is assigned by IANA to ndm-requester (Network DataMover Requester).

Is port 1363 TCP or UDP?

Port 1363 is registered for TCP and UDP.

Is it safe to open port 1363?

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 1363 is open?

On Linux run "ss -ltnup 'sport = :1363'", on macOS "lsof -nP -i :1363", and on Windows "netstat -ano | findstr :1363" to see the local process. From another machine, "nmap -p 1363 <host>" shows whether it is reachable.

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