---
type: source
title: "FAQ Netzwerk: URZ Support"
tags: [vpn, eduroam, network, troubleshooting]
related: [vpn, vpn-troubleshooting, mac-address-retrieval, easyroam]
created: 2026-07-01
updated: 2026-07-01
sources: ["output/rz_uni_greifswald_de_support_faq_netzwerk.md"]
---

# FAQ Netzwerk: URZ Support

This source provides a comprehensive FAQ for network-related issues at the Universität Greifswald, specifically focusing on MAC address retrieval, VPN connectivity, and eduroam troubleshooting.

## Key Content Areas

### MAC Address Retrieval
Provides OS-specific instructions for finding the hardware address:
- **Windows**: `ipconfig /all` via cmd.
- **macOS**: System Settings $\rightarrow$ Network $\rightarrow$ Advanced/Hardware.
- **Linux**: `ifconfig` via terminal.
- **ZeroClient**: Physical sticker on the device.

### VPN Support and Troubleshooting
The URZ provides a VPN service but notes that connectivity cannot be fully guaranteed due to external ISP regulations.
- **Support Requirements**: Users must provide device type, OS version, VPN client (for macOS), public IP without VPN, and the timestamp of the failure.
- **Windows Issues**: Focuses on the necessity of the **TAP-Windows Adapter** and administrator rights for dynamic routing.
- **macOS Issues**: Notes potential timeouts and suggests re-configuring the connection.
- **Linux Issues**: Documents a bug in Ubuntu 24.04's Network-Manager preventing password entry in the private key field (workaround: right-click paste).
- **Hardware/ISP**: Specifically mentions **T-Systems Speedport** routers requiring UDP port **1194** to be opened.
- **Profiles**: Distinguishes between profiles for university members and "technical" profiles (the latter lacks access to licensed online publications).

### eduroam Troubleshooting
- **Profile Management**: Recommends using the **Easyroam App** to reinstall or install new profiles.
- **macOS**: Instructions for deleting old eduroam profiles via System Settings $\rightarrow$ Profiles.
- **System Time**: Emphasizes that correct system time is mandatory for successful authentication.
