CyberHunter
Local dataset, no network
// Other services

Port 1064: JSTEL

Port 1064 is assigned by IANA to jstel (JSTEL).

1064

How jstel works

Other services
client:1064jstelresponse client:1064jstelresponse

The client sends a request to port 1064 and the jstel 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 1064 dangerous?

We have no specific security note for port 1064. 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 1064

ServicePortTransportDescriptionReferenceUpdated
jstel 1064 TCP, UDP JSTEL - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1064, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1064'      # process listening on 1064
sudo lsof -nP -i :1064

macOS

sudo lsof -nP -i :1064

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1064 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1064
netstat -ano | findstr :1064

From another machine

nmap -p 1064 -sV <host>
sudo nmap -sU -p 1064 <host>
nc -zv <host> 1064

Block it in the firewall

sudo ufw deny 1064/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1064" -Direction Inbound -LocalPort 1064 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1064 used for?

Port 1064 is assigned by IANA to jstel (JSTEL).

Is port 1064 TCP or UDP?

Port 1064 is registered for TCP and UDP.

Is it safe to open port 1064?

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 1064 is open?

On Linux run "ss -ltnup 'sport = :1064'", on macOS "lsof -nP -i :1064", and on Windows "netstat -ano | findstr :1064" to see the local process. From another machine, "nmap -p 1064 <host>" shows whether it is reachable.

05 Related
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