Yes, the modem/Firewall is a PACE model 4111N-030. The IP range is divided into two ranges, the static IP range and the DHPC range. The Servers are Linux servers running MySQL local, HTTP, HTTPS, NAMED, Postfix, etc. The new server was tested using the internal IP addresses and the server is responding to requests internally. When the request arrrives from the external IP and it is routed to the internal IP/port, it does not reply. In fact, the logs have no reference of the request arriving.