D-Link DFL-2500 User Guide - Page 174
Components & Security Issues
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18.3. HTTP 155 4. Rules (Using Private IPs) If the firewall is using private IP's, the following NAT rule need to be added instead. Rules → IP Rules → Add → IP Rule: General: Name: NAT-ftp-outbound Action: NAT Service: ftp-outbound Address Filter: Source Interface: lan Network: lannet Destination wan all-nets NAT: Check Use Interface Address Then click OK. 18.3 HTTP Hyper Text Transfer Protocol (HTTP), is the primary protocol used to access the World Wide Web (WWW). It is a connectionless, stateless application layer protocol (OSI layer 7), which is based on the request/response architecture. The client, such as Web browser, typically sends a request by establishing a TCP/IP connection to a particular port (usually port 80) on a remote server. The server answers with a response string, followed by a message of its own, for example, a HTML file to be shown in the Web browser, an active-x component to be executed on the client, or an error message. 18.3.1 Components & Security Issues To enable more advanced functions and extensions to HTTP services, some add-on components, known as "active contents", are usually accompanied with the HTTP response to the client computer. D-Link Firewalls User's Guide
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