I have an RDS environment with two RDS gateway servers in an F5 load-balanced farm and several back-end terminal servers. Our datacenter is in Maryland and I have a user connecting from her home in Alaska over a VPN in Minnesota. Ping results show an average of 150ms round-trip times but with little or no packet loss. We have created signed pre-configured files for this user and when using either the FQDN or just DN of the terminal server, the step "Initiating Remote Connection...." will hang for a very long time (10+minutes) or timeout altogether. If we substitute the internal IP address for the DN, the connection occurs almost instantly. What could be causing this? We have ensured that the RDS gateway servers have no problem resolving the server.
Thanks in advance.