---
title: Firewall Ports and Addresses
slug: help-center/firewall-ports-and-addresses
docTags: 
createdAt: 2024-03-04T12:54:30.786Z
---

Which ports does CLEMAP Load Management communicate through?

The Edge device establishes connections via the following ports:

| Adress/Service                                                   | Port                   | Description                                                                                                                                                                                          | Direction          | Required/Optional |
| ---------------------------------------------------------------- | ---------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------ | ----------------- |
| dns                                                              | UDP/TCP 53             | Translates human-friendly domain names into IP addresses.                                                                                                                                            | outbound           | Required          |
| mqtt.cloud.clemap.com                                            | TCP 8883<br />TCP 3032 | Standard communication with the main CLEMAP MQTT broker. Communication is encrypted: MQTT over SSL.                                                                                                  | outbound           | Required          |
| bitbucket.org                                                    | TCP 22                 | Firmware updates are downloaded from this address. Communication is encrypted via SSH.                                                                                                               | outbound           | Required          |
| \*.ntp.org                                                       | UDP 123                | Time server used to synchronize the time on CLEMAP devices. NTP is essential for accurate and consistent timekeeping across the network, as it allows CLEMAP devices to use a common time reference. | outbound           | Required          |
| log.cloud.clemap.com                                             | TCP 3100               | Used to send device logs to the CLEMAP cloud logging service.                                                                                                                                        | outbound           | Required          |
| s2.cloud.clemap.com                                              | TCP 3024<br />TCP 3080 | Remote access to devices via SSH for support.                                                                                                                                                        | outbound           | Required          |
| b2.cloud.clemap.com                                              | TCP 8883               | Communication with the CLEMAP monitoring MQTT broker. Communication is encrypted: MQTT over SSL.                                                                                                     | outbound           | Required          |
| static-edge-device-ressources-clap.s3.eu-central-1.amazonaws.com | TCP 443                | Used to download CLEMAP device resources from AWS S3, including the Teleport installation archive.                                                                                                   | outbound           | Required          |
| local                                                            | TCP 7000               | Used for communication between cascaded parent and child CLEMAP Load Management systems.                                                                                                             | Local network only | Optional          |
| local                                                            | TCP 8050               | Used by charging stations to connect via OCPP (proxy connection).                                                                                                                                    | Local network only | Optional          |
| local                                                            | TCP 7050               | Used by charging stations to connect via OCPP (direct connection).                                                                                                                                   | Local network only | Optional          |
| https\://api.zaptec.com                                          | TCP 443                | Control of Zaptec charging stations via Zaptec Cloud for CLEMAP Load Management.                                                                                                                     | outbound           | Optional          |
| https\://api.easee.com                                           | TCP 443                | Control of Easee charging stations via Easee Cloud for CLEMAP Load Management.                                                                                                                       | outbound           | Optional          |
| https\://api.smart-me.com                                        | TCP 443                | Control of Pico Smart-me charging stations via the smart-me Cloud for CLEMAP Load Management.                                                                                                        | outbound           | Optional          |