Network administrators often close specific ports on their network to protect the network from potentially harmful Internet access. This is commonly known as a "firewall." Incoming and/or outgoing data is not allowed through the firewall until the ports are configured for Internet access.

If you connect to the Internet through a network (LAN), the FAFSA on the Web, Renewal on the Web, Corrections on the Web, and PIN Web sites filter information through specific ports on the network. The FAFSA sites use standard ports 80 and 443 with a TCP/IP Protocol. This reduces the number of firewall problems. However, if the "access denied" or "server is down" messages persist, you should contact your network administrator to make sure both standard ports are configured correctly.

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