CyberHunter
Local dataset, no network
// Other services

Port 1134: MicroAPL APLX

Port 1134 is assigned by IANA to aplx (MicroAPL APLX).

1134

How aplx works

Other services
client:1134aplxresponse client:1134aplxresponse

The client sends a request to port 1134 and the aplx 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 1134 dangerous?

We have no specific security note for port 1134. 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 1134

ServicePortTransportDescriptionReferenceUpdated
aplx 1134 TCP, UDP MicroAPL APLX - 2006-02

// source: IANA service name and port number registry

03 Check it

Which program uses port 1134, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1134'      # process listening on 1134
sudo lsof -nP -i :1134

macOS

sudo lsof -nP -i :1134

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1134 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1134
netstat -ano | findstr :1134

From another machine

nmap -p 1134 -sV <host>
sudo nmap -sU -p 1134 <host>
nc -zv <host> 1134

Block it in the firewall

sudo ufw deny 1134/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1134" -Direction Inbound -LocalPort 1134 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1134 used for?

Port 1134 is assigned by IANA to aplx (MicroAPL APLX).

Is port 1134 TCP or UDP?

Port 1134 is registered for TCP and UDP.

Is it safe to open port 1134?

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 1134 is open?

On Linux run "ss -ltnup 'sport = :1134'", on macOS "lsof -nP -i :1134", and on Windows "netstat -ano | findstr :1134" to see the local process. From another machine, "nmap -p 1134 <host>" shows whether it is reachable.

05 Related
:4444 Metasploit default / krb524 tcp · udp · high risk :31337 Back Orifice / elite tcp · udp · high risk :1 TCP Port Service Multiplexer tcp · udp :5 Remote Job Entry tcp · udp :9 Discard tcp · udp · sctp · dccp :11 Active Users tcp · udp :17 Quote of the Day tcp · udp :18 Message Send Protocol (historic) tcp · udp

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