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I recommend using PPTP protocol
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I setup a Barracuda firewall and IPSec VPN for iOS clients to connect via the VPN. &nbsp;When connected to IPSec, we have did all of the normal tests with DNS, http, https. &nbsp;The barracuda shows all traffic passing through it. &nbsp;I don’t know what to do. &nbsp;We have a packet dump from the barracuda that shows the traffic passing back to the iOS device, so the website should load, but its not.
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I setup a Barracuda firewall and IPSec VPN for iOS clients to connect via the VPN.  When connected to IPSec, we have did all of the normal tests with DNS, http, https.  The barracuda shows all traffic passing through it.  I don’t know what to do.  We have a packet dump from the barracuda that shows the traffic passing back to the iOS device, so the website should load, but its not.

IPSec on iOS not passing internet traffic

iOS is a mobile operating system developed by Apple; it is a derivative of the Mac OS X desktop operating system, with which it shares many (but not all) common frameworks and other components. These include Cocoa Touch, the Mach/Darwin/XNU kernel and code from the Berkeley Software Distribution (BSD). Each iOS application runs in its own secure sandbox to prevent altering other applications, the operating system, or any other data.

Hardware-based firewalls provide more sophisticated protection for inbound and outbound traffic than the simple Windows software firewall or the basic NAT firewalls found in routers. These devices implement techniques such as stateful packet inspection, deep packet inspection, and content filtering; and may include built-in antivirus and anti-malware protection.

Hardware Firewalls

A virtual private network (VPN) is a network that uses a public telecommunication infrastructure, such as the Internet, to provide remote offices or travelling users access to a central organizational network securely. VPNs encapsulate data transfers using secure cryptographic methods and other security mechanisms to ensure that only authorized users can access the network and that the data cannot be intercepted.