Solution (specific to Hughes.net customers):
navy.mil site is a "secure site".
The site required the following changes:
Access properties in the LAN connection and add the following static DNS server under the TCP/IP protocol: 66.82.4.8. The DNS suffix for this connection is hughes.net. This change must also be made if you are attempting to access certain VPN's. :-) The modem will require a 30 second shut down and reboot after these changes are made.
Thanx to all who helped.
I'm not sure what screwed-up DNS has to do with being a "secure" site, but I'm glad you got your problem fixed!