- If both devices are under a NAT the packets flow relayed through a server? (or in cases where direct connection can be established somehow) - And if direct c

- If both devices are under a NAT the packets flow relayed through a server? (or in cases where direct connection can be established somehow) - And if direct connection is available (both in the same LAN) the flow is direct? (reducing latency) If yes, is this done automatically? If I'm not mistaken this what Logmein Hamachi does. I experience low lat/high speed in the LAN and in a few cases high latency in some devices (due the "relayed mode"), when direct link is not established. Good part is that it seamless for the end user... best case is found automatically and transparently.