VPN unter iOS und iPadOS/en: Unterschied zwischen den Versionen

Aktuelle Version vom 30. Juni 2026, 16:20 Uhr

Die deutsche Version finden Sie auf der Seite VPN unter iOS und iPadOS

A VPN creates an encrypted data tunnel for your Internet connection. With the Paderborn University VPN, you can securely access the university’s internal network from off-campus—just as if you were on campus. This allows you, for example, to access library services, literature databases, network drives, or specific websites that are only available within the university network.

The University of Paderborn uses OpenVPN for this service. The following instructions explain how to set up the VPN on your iOS device.

Simultaneous connections[Bearbeiten | Quelltext bearbeiten]

🛈
Do you want to connect your laptop and your mobile phone to the VPN in addition to your PC? You can set up VPN connections on multiple devices. However, each person can only establish one connection per VPN at the same time.

What does that mean?

Uni-VPN

If you use the Uni-VPN, you can only establish one connection at a time.
You cannot establish a connection to the Uni-VPN on another device at the same time.
You must disconnect the existing connection first.

Group VPN

If you use a group VPN, you cannot establish a second VPN connection to this group VPN on another device at the same time.
You must disconnect the existing connection first.
However, you can establish a parallel connection to the Uni VPN or another group VPN on another device.

What needs to be done?[Bearbeiten | Quelltext bearbeiten]

Install OpenVPN Connect from the AppStore.
Download a Personal Certificate File whose file extension is .OVPN12.
Open this .OVPN12 file on the iOS device, select "Open with OpenVPN-Connect" and import the certificate there.
Download the configuration file:

Use this to set up the VPN connection in OpenVPN.

Step-by-step instructions[Bearbeiten | Quelltext bearbeiten]

Install OpenVPN Connect[Bearbeiten | Quelltext bearbeiten]

Install the OpenVPN Connect app. You can find these like other apps in the AppStore.

Then open the OpenVPN Connect app and agree to the terms of use with "Accept".

Import network certificate[Bearbeiten | Quelltext bearbeiten]

For the VPN connection we need a network certificate. You cannot use the Eduroam certificate that may already be installed.

Open the service portal using Safari.
Log in with your university account.

Note: Do not use an alternative browser such as Google Chrome or Firefox for this. Downloading files in other browsers is not permitted on iOS.

Click on the 3 vertical bars at the top right.
Click on Benutzerverwaltung and then Netzwerkeinstellungen.

Click Neues Zertifikat erstellen.

Give the certificate a unique name (Example: iPhone VPN)
Select Version 1 as the file format.
Then click on Neues Zertifikat zusenden.

A new network certificate has now been created for you.
First copy the Import Password to the clipboard.
Now click on "Netzwerkzertifikat für OpenVPN Connect App (nur für iOS)".

Click on "Load".

Your network certificate has been downloaded.

Click on the "Download Button".

Open the "Network_Certificate file" by clicking on it.

In newer iOS versions, the file opens automatically in OpenVPN.

If this is not the case, manually select OpenVPN from the list of applications with which you want to open the file. You may need to click on "More" and swipe some elements to the side.

In the OpenVPN app, click ADD to import the certificate into OpenVPN.

Enter the password for the certificate. We just copied this to the clipboard. (1)
Then click OK. (2)

Import configuration file[Bearbeiten | Quelltext bearbeiten]

Now we need a configuration file. Switch back to the Safari browser.
Download the configuration file. To do this, select the VPN you want to connect to and click Download.

Note: You can click "Download" here to download your configuration file. This is not a screenshot ;-)

Protocol

The VPN connection can be established using two different protocols.

Use UDP whenever possible. This protocol offers the best overall combination of high speed, low latency, and stability.

Use TCP only in exceptional cases if you are unable to establish a connection via UDP. Speed and latency may be significantly worse with TCP.

Route all anternet traffic through the tunnel?

The VPN tunnel can be configured in two different ways.

Full Tunnel
All internet traffic is routed through the VPN in encrypted form. You establish a connection to the Paderborn University network and access the internet from this network. From the perspective of the services you use online, you have a Paderborn University IP address. You benefit from the firewall and security measures in the University network.

Use this option if you want to access external resources provided by Paderborn University Library, such as eBooks.

Split Tunnel
With the split tunnel option, only connections to destinations within the Paderborn University network are routed through the VPN tunnel. From the perspective of the services you use online, you do not have a Paderborn University IP address.

Depending on network load, speed and latency may be slightly better in this mode.

Before downloading, deactivate the checkmark to create a split-tunnel configuration file.

Click on "Load".

Open the OpenVPN configuration file. On newer iOS versions, the file usually opens automatically in OpenVPN.
If not, open the file manually with OpenVPN by selecting it from the list.

Click on ADD.

The iPhone will now ask if you want to allow the VPN app access. Tap Allow.

Now we just need to select the certificate that was already imported.
Tap Certificate and Key.
Select Network_Certificate....
Finally, tap CONNECT.

The VPN should now connect automatically for the first time. You will see this indicated by the green icon.
Now the VPN should connect automatically for the first time.
To disconnect the VPN, tap the green icon. The first time you do this, a message will appear asking if you really want to disconnect. You can select Don't show again if you don't want to be asked this every time.
The VPN will then have a gray icon and will display Disconnected until you tap it again to reconnect.

You can also manage the connection and connect and disconnect in your iPhone settings under VPN.

Note: When the VPN is active, all your internet traffic is routed through the servers of Paderborn University. Therefore, only activate the VPN connection when you actually need it.

Check VPN[Bearbeiten | Quelltext bearbeiten]

You can check the functionality of the VPN by calling:

https://go.upb.de/ip

Your IP will be displayed there and it will show whether you are on the university network.

Known Issues[Bearbeiten | Quelltext bearbeiten]

No import[Bearbeiten | Quelltext bearbeiten]

Problem: Configuration file and certificate cannot be imported into the OpenVPN app. Download size 0 kB.
Cause: iCloud is specified as the download folder.
Solution: Select the local download folder.

 Settings -> Safari -> Downloads -> Local Downloads Folder

Unknown/Unsupported Options[Bearbeiten | Quelltext bearbeiten]

Problem: VPN cannot be activated.
Error message:

 EVENT: CORE_THREAD_ERROR option_error: sorry, unsupported options present in configuration: UNKNOWN/UNSUPPORTED OPTIONS [ERR]

Solution: Update your configuration file. Details under 'Import configuration file above.

@@ Zeile 4: / Zeile 4: @@
 |translated title=VPN on iOS
 }}
+A VPN creates an encrypted data tunnel for your Internet connection. With the Paderborn University VPN, you can securely access the university’s internal network from off-campus—just as if you were on campus. This allows you, for example, to access library services, literature databases, network drives, or specific websites that are only available within the university network.
+<br>
-<bootstrap_alert color=warning>
+The University of Paderborn uses OpenVPN for this service. The following instructions explain how to set up the VPN on your iOS device.
-If you cannot connect to OpenVPN and receive the error message ''"UNKNOWN/UNSUPPORTED OPTIONS"'': You can only use the OpenVPN app from version 3.4 if you have installed the current configuration file. You can find instructions on how to do this in the '''Import configuration file''' section. You do not need to install a new user certificate.
+==Simultaneous connections==
+<bootstrap_alert color=info>
+<span style='font-size:30px;'>&#128712;</span>
+<br>
+Do you want to connect your laptop and your mobile phone to the VPN in addition to your PC? You can set up VPN connections on multiple devices. However, each person can only establish one connection per VPN at the same time.
 </bootstrap_alert>
-These instructions show you how to set up a VPN connection to the university network on the iPhone and iPad.<br>
+<bootstrap_accordion>
-A '''V'''irtual '''P'''rivate '''N'''etwork ensures secure access to the university network from external networks.<br>
+<bootstrap_panel heading="What does that mean?" color="info">
-Certain services are only available from the university network. This includes, for example, accessing network drives and downloading online resources from the university library homepage. <br>
+'''Uni-VPN'''
-Do you want to access these services and are not at university? Then you need a VPN connection. <br>
+* If you use the Uni-VPN, you can only establish one connection at a time.
+* You cannot establish a connection to the Uni-VPN on another device at the same time.
+* You must disconnect the existing connection first.
+'''Group VPN'''
+* If you use a group VPN, you cannot establish a second VPN connection to this group VPN on another device at the same time.
+* You must disconnect the existing connection first.
+* However, you can establish a parallel connection to the Uni VPN or another group VPN on another device.
+</bootstrap_panel>
+</bootstrap_accordion>
 == What needs to be done? ==
 * Install OpenVPN Connect from the [https://itunes.apple.com/de/app/openvpn-connect/id590379981 AppStore].
-* Download a [[Network Certificates|Personal Certificate File]] whose file extension is <b>.OVPN12</b>.
+* Download a [[Netzwerkzertifikate|Personal Certificate File]] whose file extension is <b>.OVPN12</b>.
 * Open this <b>.OVPN12</b> file on the iOS device, select "Open with OpenVPN-Connect" and import the certificate there.
 * Download the configuration file:
-<iframe key="infoboard" width="600" height="330" path="vpn-config/index.php?group=uni&os=ios&redirect_gateway=1" />
+<iframe key="vpnconfig" width="600" height="450" path="/openvpn/en/?group=upb&os=ios&redirect=1" />
 * Use this to set up the VPN connection in OpenVPN.
@@ Zeile 64: / Zeile 81: @@
 [[Datei:Vpn-ios-2.png|links|mini|ohne|350px]]
-<br>
-* Click '''Load'''.
+* Click on '''"Load"'''.
 <br clear=all>
 [[Datei:Vpn-ios-3.png|links|mini|ohne|350px]]
-<br>
 * Your network certificate has been downloaded.
-* Click on the '''Download Button'''.
+* Click on the '''"Download Button"'''.
 * Open the '''"Network_Certificate file"''' by clicking on it.
 <br clear=all>
 [[Datei:Vpn-ios-4.png|links|mini|ohne|350px]]
-<br>
-* Open the certificate file with OpenVPN.
+* In newer iOS versions, the file opens automatically in OpenVPN.
-* You may need to click '''More''' and swipe some items to the side.
+* If this is not the case, manually select OpenVPN from the list of applications with which you want to open the file. You may need to click on "More" and swipe some elements to the side.
+* In the OpenVPN app, click '''ADD''' to import the certificate into OpenVPN.
 <br clear=all>
 [[Datei:Vpn-ios-5.png|links|mini|ohne|350px]]
 <br>
-* Now the OpenVPN app opens.
+* Enter the password for the certificate. We just copied this to the clipboard. (1)
-* Click '''"ADD"''' to import the certificate into OpenVPN.
+* Then click '''OK'''. (2)
-* Enter the password for the certificate. We have just copied this to the clipboard.
 <br clear=all>
-===Import configuration file===
+=== Import configuration file===
-Now we need a configuration file. To do this, we switch back to the Safari browser. <br>
-Download the configuration file, select the VPN you want to connect to and click Download.
+* Now we need a configuration file. Switch back to the Safari browser.
-Normally "Uni-VPN (Standard)" should be the right choice, but if you have problems with the connection, try "Uni-VPN-TCP" instead.
+* Download the configuration file. To do this, select the VPN you want to connect to and click '''Download'''.
-<center><iframe key="infoboard" width="600" height="330" path="vpn-config/index.php?group=uni&os=ios&redirect_gateway=1" /></center>
+<iframe key="vpnconfig" width="600" height="450" path="/openvpn/de/?group=upb&os=ios&redirect=1" />
 <br clear=all>
-<span style="color:green"> Note:</span> You can click on '''"Download"''' here and download your configuration file. This is not a screenshot ;-)
+<span style="color:green"> Note: You can click '''"Download"''' here to download your configuration file. This is not a screenshot ;-)
 <br clear=all>
-<bootstrap_accordion>
+{{VPN-Options-en}}
-	<bootstrap_panel heading="Direct all internet traffic through the tunnel?">
-*Accessing online resources may require that you route all network traffic through the tunnel.
-* You do not need this option to simply access the network drives.
-</bootstrap_panel>
-</bootstrap_accordion>
 [[Datei:Vpn-ios-6.png|links|mini|ohne|350px]]
-<br>
+* Click on '''"Load"'''.
-* Click '''Load'''.
 <br clear=all>
 [[Datei:Vpn-ios-7.png|links|mini|ohne|350px]]
-<br>
+* Open the OpenVPN configuration file. On newer iOS versions, the file usually opens automatically in OpenVPN.
-* Open the OpenVPN configuration file.
+* If not, open the file manually with OpenVPN by selecting it from the list.
-<br clear=all>
-We also open this file with OpenVPN.
 [[Datei:Vpn-ios-13.png|links|mini|ohne|350px|Open configuration file in OpenVPN app]]
-<br>
+* Click on '''ADD'''.
-* Click on the ''Share'' icon.
-* Select OpenVPN in the suggested apps.
 <br clear=all>
 [[Datei:Vpn-ios-8.png|links|mini|ohne|350px]]
-<br>
+* The iPhone will now ask if you want to allow the VPN app access. Tap '''Allow'''.
-* The OpenVPN app opens.
-* Click '''"ADD"''' to add the configuration file.
 <br clear=all>
 [[Datei:Vpn-ios-9.png|links|mini|ohne|350px]]
-<br>
-* Now we just have to select the already imported certificate.
+* Now we just need to select the certificate that was already imported.
-* Expand the menu under '''"Certificates"'''.
+* Tap '''Certificate and Key'''.
-* Select '''"Network_Certificates..."'''.
+* Select '''Network_Certificate...'''.
-* Finally, click '''"ADD"''' at the top right.
+* Finally, tap '''CONNECT'''.
 <br clear=all>
 [[Datei:Vpn-ios-10.png|links|mini|ohne|350px]]
-<br>
+* The VPN should now connect automatically for the first time. You will see this indicated by the green icon.
-* Click '''Allow'''.
+* Now the VPN should connect automatically for the first time.
-* You may need to confirm this with your '''PIN''' or '''fingerprint'''.
+* To disconnect the VPN, tap the green icon. The first time you do this, a message will appear asking if you really want to disconnect. You can select '''Don't show again''' if you don't want to be asked this every time.
+* The VPN will then have a gray icon and will display '''Disconnected''' until you tap it again to reconnect.
 <br clear=all>
-===Enable VPN===
 [[Datei:Vpn-ios-11.png|links|mini|ohne|350px]]
 <br>
-* We have now successfully set up the VPN connection.
+* You can also manage the connection and connect and disconnect in your iPhone settings under '''VPN'''.
-* By clicking on the gray switch we can switch on the VPN connection.
-<br clear=all>
-[[Datei:VPN_Android-11.png|links|mini|ohne|350px]]
-<br>
-* The VPN connection is now active.
-* By clicking on the green switch, you can switch off the VPN connection again if necessary.
 <br clear=all>
-<span style="color:green"> Note:</span> When the VPN is active, all of your internet traffic is redirected via the University of Paderborn servers. So only activate the VPN connection if you actually need it.
+<span style="color:green"> Note:</span> When the VPN is active, all your internet traffic is routed through the servers of Paderborn University. Therefore, only activate the VPN connection when you actually need it.
 ==Check VPN==
@@ Zeile 161: / Zeile 166: @@
 Your IP will be displayed there and it will show whether you are on the university network.
-[[File:OpenVPN connected - go_ip.png|center|400px|mini|without|Example: Existing connection to the university network.]]
+[[Datei:OpenVPN verbunden - go_ip.png|mitte|400px|mini|ohne|Example: Existing connection to the university network.]]
 <br clear=all>
@@ Zeile 182: / Zeile 187: @@
 ==See also==
-* [[Network]]
+* [[Netzwerk]]

	Mo. – Do.	Fr.
Vor-Ort-Support	08:30 – 16:00 Uhr	08:30 – 14:00 Uhr
Telefonsupport	08:30 – 16:00 Uhr	08:30 – 14:00 Uhr
Servicecenter Medien	08:30 – 16:00 Uhr	08:30 – 14:00 Uhr