We have numerous users that are unable to connect via Direct Access to our corporate network. After many days of debugging, we called our ISP and told them about our issue. They said, that their network design may be the cause – I suppose it would be how they do NAT throughout their network – just guessing!
Our users all share the same ISP. There is no issue when connecting trough a second ISP.
Is there anyone who has experienced similar issue? Could this be the root cause to our problem?
/Michael