CyberHunter
Local dataset, no network
// Other services

Port 1864: Paradym 31 Port

Port 1864 is assigned by IANA to paradym-31port (Paradym 31 Port).

1864

How paradym-31port works

Other services
client:1864paradym-31portresponse client:1864paradym-31portresponse

The client sends a request to port 1864 and the paradym-31port 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 1864 dangerous?

We have no specific security note for port 1864. 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 1864

ServicePortTransportDescriptionReferenceUpdated
paradym-31port 1864 TCP, UDP Paradym 31 Port - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1864, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1864'      # process listening on 1864
sudo lsof -nP -i :1864

macOS

sudo lsof -nP -i :1864

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1864 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1864
netstat -ano | findstr :1864

From another machine

nmap -p 1864 -sV <host>
sudo nmap -sU -p 1864 <host>
nc -zv <host> 1864

Block it in the firewall

sudo ufw deny 1864/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1864" -Direction Inbound -LocalPort 1864 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1864 used for?

Port 1864 is assigned by IANA to paradym-31port (Paradym 31 Port).

Is port 1864 TCP or UDP?

Port 1864 is registered for TCP and UDP.

Is it safe to open port 1864?

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 1864 is open?

On Linux run "ss -ltnup 'sport = :1864'", on macOS "lsof -nP -i :1864", and on Windows "netstat -ano | findstr :1864" to see the local process. From another machine, "nmap -p 1864 <host>" shows whether it is reachable.

05 Related
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