---
title: "Firewall Settings"
slug: "firewall-einstellungen"
updated: 2026-09-17T13:07:11Z
published: 2026-09-17T13:07:11Z
canonical: "docs.homag.cloud/firewall-einstellungen"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.homag.cloud/llms.txt
> Use this file to discover all available pages before exploring further.

# Firewall Settings

## Network communication details

> [!NOTE]
> Legend
> 
> → Inbound Connections
> 
> ← Outbound Connections

### Outbound connections sR Bridge to the Internet

| **← port 443 HTTPS** | Purpose |
| --- | --- |
| [https://smarthardware-core.homag.cloud](https://smarthardware-core.homag.cloud) [https://dfshcoreprdeu01sa.blob.core.windows.net](https://dfshcoreprdeu01sa.blob.core.windows.net) [https://osu-cdn.homag.cloud](https://osu-cdn.homag.cloud) | Update |
| [https://api.serviceremote.net](https://api.serviceremote.net) [https://dispatcherde01.serviceremote.net](https://dispatcherde01.serviceremote.net) [https://dispatcherus01.serviceremote.net](https://dispatcherus01.serviceremote.net) [https://dispatchersea01.serviceremote.net](https://dispatchersea01.serviceremote.net) | Remote Diag. |

### Bilateral links sR Bridge to the Internet

| Outbound Connections ← port 123 UDP ← port 53 UDP | NTP DNS | System |
| --- | --- | --- |
| For setup and administration → port 80 TCP → ICMP | Admin UI Ping | Admin |

### Connections between machine and sR Bridge

| ← Port 37001 TCP/UDP → port 37001 TCP/UDP | sRBridge sRBridge | Starter |
| --- | --- | --- |
| Admin ← ICMP → ICMP | Ping Ping | Admin |
| Depending on the type of machine → port 5900 TCP → port 22 TCP → port 1433 TCP → port 45690 TCP → port 445 TCP → port 4840 TCP → port 4841 TCP → port 4825 - 4839 TCP → port 45100 TCP → … | VNC SSH SQL SecureUserService SMB OPC/UA Discovery OPC/UA PLC OPC/UA OPC/UA Helios | Machine Diagnostic |
| Older machines: → Port 23 TCP → port 20, 21 TCP ← port 20 TCP → port 139 TCP, 137, 138 UDP → port 1234 TCP → … | Telnet FTP FTP SMB RSM |  |