CyberHunter
Local dataset, no network
// Other services

Port 5236:

Port 5236 is assigned by IANA to padl2sim ().

5236

How padl2sim works

Other services
client:5236padl2simresponse client:5236padl2simresponse

The client sends a request to port 5236 and the padl2sim 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 5236 dangerous?

We have no specific security note for port 5236. 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 5236

ServicePortTransportDescriptionReferenceUpdated
padl2sim 5236 TCP, UDP - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 5236, and is it reachable?

Linux

sudo ss -ltnup 'sport = :5236'      # process listening on 5236
sudo lsof -nP -i :5236

macOS

sudo lsof -nP -i :5236

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 5236 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 5236
netstat -ano | findstr :5236

From another machine

nmap -p 5236 -sV <host>
sudo nmap -sU -p 5236 <host>
nc -zv <host> 5236

Block it in the firewall

sudo ufw deny 5236/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 5236" -Direction Inbound -LocalPort 5236 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 5236 used for?

Port 5236 is assigned by IANA to padl2sim ().

Is port 5236 TCP or UDP?

Port 5236 is registered for TCP and UDP.

Is it safe to open port 5236?

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 5236 is open?

On Linux run "ss -ltnup 'sport = :5236'", on macOS "lsof -nP -i :5236", and on Windows "netstat -ano | findstr :5236" to see the local process. From another machine, "nmap -p 5236 <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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