CyberHunter
Local dataset, no network
// Other services

Port 1356: CuillaMartin Company

Port 1356 is assigned by IANA to cuillamartin (CuillaMartin Company).

1356

How cuillamartin works

Other services
client:1356cuillamartinresponse client:1356cuillamartinresponse

The client sends a request to port 1356 and the cuillamartin 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 1356 dangerous?

We have no specific security note for port 1356. 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 1356

ServicePortTransportDescriptionReferenceUpdated
cuillamartin 1356 TCP, UDP CuillaMartin Company - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1356, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1356'      # process listening on 1356
sudo lsof -nP -i :1356

macOS

sudo lsof -nP -i :1356

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1356 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1356
netstat -ano | findstr :1356

From another machine

nmap -p 1356 -sV <host>
sudo nmap -sU -p 1356 <host>
nc -zv <host> 1356

Block it in the firewall

sudo ufw deny 1356/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1356" -Direction Inbound -LocalPort 1356 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1356 used for?

Port 1356 is assigned by IANA to cuillamartin (CuillaMartin Company).

Is port 1356 TCP or UDP?

Port 1356 is registered for TCP and UDP.

Is it safe to open port 1356?

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 1356 is open?

On Linux run "ss -ltnup 'sport = :1356'", on macOS "lsof -nP -i :1356", and on Windows "netstat -ano | findstr :1356" to see the local process. From another machine, "nmap -p 1356 <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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