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// Other services

Port 1583: simbaexpress

Port 1583 is assigned by IANA to simbaexpress (simbaexpress).

1583

How simbaexpress works

Other services
client:1583simbaexpressresponse client:1583simbaexpressresponse

The client sends a request to port 1583 and the simbaexpress 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 1583 dangerous?

We have no specific security note for port 1583. 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 1583

ServicePortTransportDescriptionReferenceUpdated
simbaexpress 1583 TCP, UDP simbaexpress - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1583, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1583'      # process listening on 1583
sudo lsof -nP -i :1583

macOS

sudo lsof -nP -i :1583

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1583 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1583
netstat -ano | findstr :1583

From another machine

nmap -p 1583 -sV <host>
sudo nmap -sU -p 1583 <host>
nc -zv <host> 1583

Block it in the firewall

sudo ufw deny 1583/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1583" -Direction Inbound -LocalPort 1583 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1583 used for?

Port 1583 is assigned by IANA to simbaexpress (simbaexpress).

Is port 1583 TCP or UDP?

Port 1583 is registered for TCP and UDP.

Is it safe to open port 1583?

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 1583 is open?

On Linux run "ss -ltnup 'sport = :1583'", on macOS "lsof -nP -i :1583", and on Windows "netstat -ano | findstr :1583" to see the local process. From another machine, "nmap -p 1583 <host>" shows whether it is reachable.

05 Related
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