Arduinos aren't fast enough, and don't generally do internet. To really make it work, you need a controller that has native ethernet, and NO wireless ports, or a really solid way of disabling them (like hooking their antennas to 50 dummy loads) A pair of them can then be proxies for the connection, and serve up status pages etc., without risk of ingress of control to the monitored system.

For me, the old timey Raspberry Pi B+ fits the bill.