* When a user is on-premises at the enterprise and accesses an application that is IP restricted, the source IP for traffic to this application is the Enterprise Egress IPv4 address.
* The Enterprise Egress IP represents the external IP address of the enterprise network as seen by external services or applications.
* This IP address is used for communication between the user's device and external resources, including applications that are IP restricted. References:
* The answer is based on general knowledge of networking concepts and how IP addresses are used in enterprise environments.

In the scenario where you have deployed IPsec tunnels to steer on-premises traffic to Netskope and are experiencing issues with an application, the correct statement is C: Steering bypasses for IPsec tunnels must be applied at your edge network device. This means that to effectively bypass the steering for a specific application, the configuration must be done on the network device that is establishing the IPsec tunnel, such as a firewall or router. This device controls the traffic before it enters the tunnel, so applying the bypass there ensures that the application's traffic does not get directed through the tunnel and can reach its destination directly.
The solution is based on standard practices for IPsec tunnel configuration and steering exceptions as described in Netskope's documentation on traffic steering and IPsec configuration12.

To solve the problem of normal websites not rendering properly due to a Real-time Protection policy that blocks all activities to non-corporate S3 buckets, the best solution is to create a Real-time Protection policy to allow the Browse activity to the Cloud Storage category. This approach will enable users to view content from various cloud storage services, including Amazon S3, without allowing full access to non-corporate S3 buckets. It's a more granular and less restrictive policy that allows necessary browsing activities while still maintaining control over the upload and download activities to non-corporate buckets1.
The Netskope Knowledge Portal provides information on how to configure Real-time Protection policies, including how to set up policies that allow certain activities while blocking others1. Additionally, the Netskope Community Forum offers insights into best practices for policy configuration to avoid overly restrictive rules that can impact normal web browsing