PEARL - Network Connectivity Requirements

Needed if your network security is blocking ports.

Overview:

The Link4 Pearl controller connects to the internet using standard Ethernet (IPv4) via its onboard Ethernet port.

● DHCP (Dynamic IP): Supported by default; no configuration required

● Static IP: Can be configured manually via the controller’s front panel (IP Address, Subnet Mask, Gateway)

The controller initiates outbound connections only and does not require any inbound port forwarding.

Firewall / Network Security Configuration

In most environments, no special configuration is required. However, if outbound traffic is restricted by your network security, the following ports and destinations must be allowed:

Additional Notes

● All communication is initiated by the controller (outbound)

● No inbound firewall rules or port forwarding are required

● DNS resolution must be available for the listed hostnames

Revisions:

● V1.0 4/17/2026 Brian Shim

• Related Articles

• System Setup - Network

  to view the network information for the controller on the network you would do the following:

• What is the Pearl Protect?

  The Pearl Protect is a simple data (temperature and humidity) collection device. Its primary features are: Collect temperature and humidity data and store them on the cloud. Sends you alerts of possible dangerous condition for your crops. Plug and ...

• *iGrow 100 Series Network Connectivity Issues

  100 Series NETWORK CONNECTIVITY S Com Module (Methods of remote access) RS485 – uses LinkConn Software | need license | firmware RG45 – uses webserver (network capabilities) | firmware iGrow100 Comm Module (Rabbit) Need to power off when installing ...

• iPonic Connectivity with The Cloud Troubleshooting process

  THIS PRODUCT HAS BEEN DISCONTINUED AND REPLACED BY THE PEARL CONTROL SYSTEM. https://link4controls.com/link4_controllers/ Please follow this process in reestablishing connectivity between your iPonic Controller and the Cloud. 1st Check your IP ...

• Pearl Control System Manual - V1.18.2 (May 2026)

  For detailed instructions and important information on the Pearl Control System, please refer to the attached manual. It contains everything you'll need to get started and use the control system effectively. Edit: Version 1.18.2 Manual Attached.