CyberHunter
Local dataset, no network
// Other services

Port 1403: Prospero Resource Manager

Port 1403 is assigned by IANA to prm-nm-np (Prospero Resource Manager).

1403

How prm-nm-np works

Other services
client:1403prm-nm-npresponse client:1403prm-nm-npresponse

The client sends a request to port 1403 and the prm-nm-np 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 1403 dangerous?

We have no specific security note for port 1403. 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 1403

ServicePortTransportDescriptionReferenceUpdated
prm-nm-np 1403 TCP, UDP Prospero Resource Manager - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1403, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1403'      # process listening on 1403
sudo lsof -nP -i :1403

macOS

sudo lsof -nP -i :1403

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1403 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1403
netstat -ano | findstr :1403

From another machine

nmap -p 1403 -sV <host>
sudo nmap -sU -p 1403 <host>
nc -zv <host> 1403

Block it in the firewall

sudo ufw deny 1403/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1403" -Direction Inbound -LocalPort 1403 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1403 used for?

Port 1403 is assigned by IANA to prm-nm-np (Prospero Resource Manager).

Is port 1403 TCP or UDP?

Port 1403 is registered for TCP and UDP.

Is it safe to open port 1403?

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 1403 is open?

On Linux run "ss -ltnup 'sport = :1403'", on macOS "lsof -nP -i :1403", and on Windows "netstat -ano | findstr :1403" to see the local process. From another machine, "nmap -p 1403 <host>" shows whether it is reachable.

05 Related
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