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// Other services

Port 3836: MARKEM NEXTGEN DCP

Port 3836 is assigned by IANA to markem-dcp (MARKEM NEXTGEN DCP).

3836

How markem-dcp works

Other services
client:3836markem-dcpresponse client:3836markem-dcpresponse

The client sends a request to port 3836 and the markem-dcp 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 3836 dangerous?

We have no specific security note for port 3836. 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 3836

ServicePortTransportDescriptionReferenceUpdated
markem-dcp 3836 TCP, UDP MARKEM NEXTGEN DCP - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 3836, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3836'      # process listening on 3836
sudo lsof -nP -i :3836

macOS

sudo lsof -nP -i :3836

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3836 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3836
netstat -ano | findstr :3836

From another machine

nmap -p 3836 -sV <host>
sudo nmap -sU -p 3836 <host>
nc -zv <host> 3836

Block it in the firewall

sudo ufw deny 3836/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3836" -Direction Inbound -LocalPort 3836 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3836 used for?

Port 3836 is assigned by IANA to markem-dcp (MARKEM NEXTGEN DCP).

Is port 3836 TCP or UDP?

Port 3836 is registered for TCP and UDP.

Is it safe to open port 3836?

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 3836 is open?

On Linux run "ss -ltnup 'sport = :3836'", on macOS "lsof -nP -i :3836", and on Windows "netstat -ano | findstr :3836" to see the local process. From another machine, "nmap -p 3836 <host>" shows whether it is reachable.

05 Related
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