I similarly use a Pi 3 as a X2Go/NX gateway box for remote access to office machines from home. I'm hesitant on using it as a network gateway as I'm not sure t

I similarly use a Pi 3 as a X2Go/NX gateway box for remote access to office machines from home. I'm hesitant on using it as a network gateway as I'm not sure the LAN port would be fast enough (just an impression, never actually got around to checking that) and would need a second LAN port (at least) to do the job properly. Am considering using one as a MQTT server as part of a home automation infrastructure. Could even use the on board wi-fi as a separate, carefully firewalled network for the various devices I might prefer not to have on the main network.