In an explicit ProxySG deployment, what does the TCP packet sent from the client contain as the destination IP address?

In an explicit ProxySG deployment, the TCP packet sent from the client contains the destination IP address of the ProxySG or a load balancer. This is because, in an explicit proxy configuration, clients are explicitly configured to route their traffic through the proxy server. When a client wants to access a resource on the internet, it sends the request directly to the IP address of the ProxySG instead of going to the origin content server. Consequently, during this communication, the destination IP address specified in the TCP packet is that of the ProxySG or load balancer, ensuring that all traffic is managed and controlled by the proxy server before reaching the internet or any external content servers.

The other options do not fit the context of explicit proxy usage. The origin content server's IP address is not utilized as the destination in the initial client request; instead, it is accessed after the proxy processes the requests. The IP address of the client device is not the destination for outgoing requests in this configuration, as the request is always directed to the proxy first. The public IP address of the Internet is also incorrect; while requests ultimately may go out to the internet, the initial destination for those requests in this setup is specifically the ProxySG or load balancer.