What tunnel types does Zscaler support between a router and a Zscaler data center?

Zscaler supports GRE (Generic Routing Encapsulation) and IPSEC (Internet Protocol Security) tunneling protocols for secure and efficient communication between a router and a Zscaler data center. These protocols are designed to facilitate the creation of secure and reliable tunnels over the internet.

GRE is commonly used to encapsulate a wide variety of network layer protocols into point-to-point links, which makes it suitable for scenarios where diverse protocol types need to be transmitted over an IP network. It helps establish a logical connection which can be used for various types of data.

IPSEC, on the other hand, provides robust security at the network layer by enabling encryption, authentication, and data integrity for the packets transmitted. This is crucial for ensuring that data remains secure when traversing potentially untrusted networks, such as the internet.

Combining these two tunnel types allows Zscaler to offer a flexible and secure way to connect enterprise networks to their cloud infrastructure, enabling secure access to applications and services hosted by Zscaler.

The other options do not accurately represent the types of tunneling supported by Zscaler for routing to its data centers. TCP and UDP are transport layer protocols, while HTTP and HTTPS are application layer protocols. LAN and WAN refer to types of networks rather