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// Databases & caches

Port 1862: MySQL Cluster Manager Agent

Port 1862 is assigned by IANA to mysql-cm-agent (MySQL Cluster Manager Agent).

1862

How mysql-cm-agent works

Databases & caches
app:1862mysql-cm-agent app:1862mysql-cm-agent

The application sends a SQL query to the mysql-cm-agent server on port 1862, which returns rows from its tables.

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
Databases & caches
01 Security

Is port 1862 dangerous?

We have no specific security note for port 1862. Its risk depends on the program actually listening on it. General advice for databases & caches services:

  • Bind the service to localhost or a private network, never to a public address.
  • Enable authentication, use per-application accounts and require TLS.
  • Watch for exposed Docker ports: publish them on 127.0.0.1 only.
02 Registry

IANA registry entries for port 1862

ServicePortTransportDescriptionReferenceUpdated
mysql-cm-agent 1862 TCP, UDP MySQL Cluster Manager Agent - 2009-12-08

// source: IANA service name and port number registry

03 Check it

Which program uses port 1862, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1862'      # process listening on 1862
sudo lsof -nP -i :1862

macOS

sudo lsof -nP -i :1862

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1862 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1862
netstat -ano | findstr :1862

From another machine

nmap -p 1862 -sV <host>
sudo nmap -sU -p 1862 <host>
nc -zv <host> 1862

Block it in the firewall

sudo ufw deny 1862/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1862" -Direction Inbound -LocalPort 1862 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1862 used for?

Port 1862 is assigned by IANA to mysql-cm-agent (MySQL Cluster Manager Agent).

Is port 1862 TCP or UDP?

Port 1862 is registered for TCP and UDP.

Is it safe to open port 1862?

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. Bind the service to localhost or a private network, never to a public address.

How do I check if port 1862 is open?

On Linux run "ss -ltnup 'sport = :1862'", on macOS "lsof -nP -i :1862", and on Windows "netstat -ano | findstr :1862" to see the local process. From another machine, "nmap -p 1862 <host>" shows whether it is reachable.

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