---
title: IP ports
description: "**What IP ports does the IoT gateway need to communicate?** - DNS Services (UDP Port 53) - HTTPS Resources (TCP Port 443) - MQTTS Resources (TCP Port 8883) also MQTT with TLS - NTP time service (UDP port 123)"
url: "https://faqdoc.info/en/systemauswahl/alpha-smartware-en/alpha-smart-iot-gateway-en/what-ip-ports-does-the-iot-gateway-need-to-communicate/"
updated: "2025-04-03"
category: Alpha Smart IoT gateway
---

# IP ports

**What IP ports does the IoT gateway need to communicate?**

- DNS Services (UDP Port 53)
- HTTPS Resources (TCP Port 443)
- MQTTS Resources (TCP Port 8883) also MQTT with TLS
- NTP time service (UDP port 123)