Key Terms
Review the following list of key terms:
DMZ— An intermediate space inhabited by Internet servers that falls behind a front firewall and in front of a more restrictive firewall protecting an internal network.
firewall— A device or application that restricts network access to an internal network.
packet filter— A firewall that filters by port number or other protocol information indicating the purpose of the packet.
proxy server— A computer or application that requests services on behalf of a client.
reverse proxy— A computer or application that receives inbound requests from the Internet and forwards them to an internal server.
stateful firewall— A firewall that is aware of the state of the connection.
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