Secure server-to-server connections

Server-to-server connections are secure?

Nation state actors and other capable adversaries are proven to be able to tap Internet backbone connections and data centers.

The server-to-server connections should be encrypted in a manner such that anyone tapping physical cables cannot extract any information, like raw database traffic.

The connection encryption methods are VPN and SSH tunnels.

Links:

• Room 641A (Wikipedia)
• Googlers say “F*** you” to NSA, company encrypts internal network (Ars Technica)
• Reports that NSA taps into Google and Yahoo data hubs infuriate tech giants (The Guardian)