We have a multisite DirectAccess setup which works fine but seems to have a real slow throughput (355 KB/s). I did some troubleshooting already and discovered that it actually happens with Natting. If I put the Direct Access client on an internal network, make it believe it needs to connect to Direct Access on its internal private port I get speeds of 130 MB/s copying a file. If I let it connect from an internal network but behind the firewall NAT (tested with different firewalls and routers) I only get 2 MB/s what could explain the even slower connections on the internet.
Is there something I can do to make it faster behind NAT? Anyone Experienced anything similar yet?