. Schematic web site architecture. 2. . . IDS. . Application Firewall(WAF). . Firewall. . Load Balancer. . DB. . . WS1. WS2. WS3. Firewall. . App Servers. . 3. Web application code. Runs on web server or app server.Takes input from web users (via web server)Interacts with the database and 3rd parties.Prepares results for users (via web server)Examples: Shopping carts, home banking, bill pay, tax prep, New code written for every web site.Written in:C, PHP, Perl, Python, JSP, ASP, Often written with little consideration for security.
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