CyberHunter
Local dataset, no network
// Other services

Port 1436: Satellite-data Acquisition System 2

Port 1436 is assigned by IANA to saism (Satellite-data Acquisition System 2).

1436

How saism works

Other services
client:1436saismresponse client:1436saismresponse

The client sends a request to port 1436 and the saism 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 1436 dangerous?

We have no specific security note for port 1436. 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 1436

ServicePortTransportDescriptionReferenceUpdated
saism 1436 TCP, UDP Satellite-data Acquisition System 2 - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1436, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1436'      # process listening on 1436
sudo lsof -nP -i :1436

macOS

sudo lsof -nP -i :1436

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1436 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1436
netstat -ano | findstr :1436

From another machine

nmap -p 1436 -sV <host>
sudo nmap -sU -p 1436 <host>
nc -zv <host> 1436

Block it in the firewall

sudo ufw deny 1436/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1436" -Direction Inbound -LocalPort 1436 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1436 used for?

Port 1436 is assigned by IANA to saism (Satellite-data Acquisition System 2).

Is port 1436 TCP or UDP?

Port 1436 is registered for TCP and UDP.

Is it safe to open port 1436?

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 1436 is open?

On Linux run "ss -ltnup 'sport = :1436'", on macOS "lsof -nP -i :1436", and on Windows "netstat -ano | findstr :1436" to see the local process. From another machine, "nmap -p 1436 <host>" shows whether it is reachable.

05 Related
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