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// Other services

Port 48048: Juliar Programming Language Protocol

Port 48048 is assigned by IANA to juka (Juliar Programming Language Protocol).

48048

How juka works

Other services
client:48048jukaresponse client:48048jukaresponse

The client sends a request to port 48048 and the juka service answers.

Transport
TCP
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 48048 dangerous?

We have no specific security note for port 48048. 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 48048

ServicePortTransportDescriptionReferenceUpdated
juka 48048 TCP Juliar Programming Language Protocol - 2019-03-08
-48048-Reserved--

// source: IANA service name and port number registry

03 Check it

Which program uses port 48048, and is it reachable?

Linux

sudo ss -ltnup 'sport = :48048'      # process listening on 48048
sudo lsof -nP -i :48048

macOS

sudo lsof -nP -i :48048

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 48048 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 48048
netstat -ano | findstr :48048

From another machine

nmap -p 48048 -sV <host>
nc -zv <host> 48048

Block it in the firewall

sudo ufw deny 48048/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 48048" -Direction Inbound -LocalPort 48048 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 48048 used for?

Port 48048 is assigned by IANA to juka (Juliar Programming Language Protocol).

Is port 48048 TCP or UDP?

Port 48048 is registered for TCP.

Is it safe to open port 48048?

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 48048 is open?

On Linux run "ss -ltnup 'sport = :48048'", on macOS "lsof -nP -i :48048", and on Windows "netstat -ano | findstr :48048" to see the local process. From another machine, "nmap -p 48048 <host>" shows whether it is reachable.

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