Building Google Cloud Platform Solutions

SSL and TCP proxies

SSL and TCP proxies can be thought of as a global extension of the TCP network load balancer. The major differences here are that SSL and TCP proxies forward traffic to backend services rather than target pools, and that SSL proxies terminate SSL encryption.

Additionally, TCP and SSL proxies support a more restrictive set of ports when forwarding traffic, as shown in the following diagram:

All requests to the global IP address are forwarded to the target proxy. For SSL proxy load balancing, SSL traffic is terminated at the proxy before being forwarded to the backend service. The backend service determines which backend ...