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Barracuda CloudGen Firewall

This Firmware Version Is End-Of-Support

Documentation for this product is no longer updated. Please see End-of-Support for CloudGen Firewall Firmware for further information on our EoS policy.

How to Configure Apple iOS Devices for Client-to-Site IPsec VPNs with PSK

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For instructions how to more easily configure and manage a client-to-site VPN using CudaLaunch as the VPN client, see CudaLaunch and F-Series Firewall Configuration for CudaLaunch.

To connect to a client-to-site VPN with an iOS device, you can either manually configure the built-in IPsec VPN client, or use the TINA client included in CudaLaunch to automatically configure the client for you. Always upgrade to the latest iOS version for your device. iOS 6.0 and older do not support certificates longer than 512 bit. Follow the steps in this article to configure Apple iOS devices for an IKEv1 IPsec VPN with pre-shared key authentication.


Configure the Apple iOS Device

Before you configure the Apple iOS device:

To configure an Apple iOS device for IPsec VPN connections with the Barracuda NextGen Firewall F-Series:

  1. On the Apple iOS device, tap Settings > General > VPN > Add VPN Configuration.
  2. On the Add VPN configuration screen, tap the IPSec tab.
  3. Configure the following settings:
    • Server – The IP address or FQDN that the VPN service is listening on (e.g.,
    • Account and Password – Enter the username and password.
    • Secret – Enter the PSK. 
    • Group Name – Enter the group policy name you entered for the IPsec PSK VPN on the Barracuda NextGen Firewall F-Series (e.g., IPsecPSKGroupPolicyName). For more information, see Step 3 in How to Configure a Client-to-Site IKEv1 IPsec VPN with PSK
  4. Tap Save in the top right corner. The VPN configuration then appears on the VPN screen.


Connect to the VPN with the Apple iOS Device

After configuring the Apple device, you can connect to the IPsec VPN.

On your Apple iOS device, tap Settings and then turn on VPN. After a few seconds, the VPN icon appears in the status bar to indicate that the connection is successful.

Establishing VPN through NAT can be problematic. If you experience connection losses, increase the UDP timeout on the NAT'd device. For example, the iPhone sends keepalive packets every 60 seconds. To increase the UDP timeout for the iPhone, enter any value over 60 seconds.

Unfortunately, many cell phone providers use NAT to connect mobile devices to the Internet. Contact your cell phone provider support for help.

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