I quick Google search for “Throttle Linux network connection” came up with this result - even if Fog can’t throttle, if you can slow down the speed of the server’s NIC it should accomplish the same result. You also might ask whoever the network is outsourced to if some form of QoS can be setup (so it can run at full speed unless someone else needs it).
[url]http://superuser.com/questions/66574/how-to-throttle-bandwidth-on-a-linux-network-interface[/url]