port 80

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port 80

(1) The default IP port number used by Web servers for Web (HTTP) transactions. Secure HTTP (SHTTP) transactions are handled by port 443. Requests that come into the server at port 80 often result in returning an HTML page to the browser. Port 80 requests may also call a CGI script, ISAPI or ASP process, a server-side include (SSI) or a Java servlet, all of which perform some process in the server and then typically return an HTML page with the results. A request coming into port 80 may result in any file being copied from the Web server to the requesting client.

For the complete list of well-known ports and registered ports used on the Internet, visit www.iana.org/assignments/port-numbers. See TCP/IP port.

(2) An input/output address in a PC used for sending POST codes. See POST and PC I/O addressing.

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Port 80 is the only port that should be open on the Web server.

To serve and protect: want to avoid e-commerce nightmares? Keep your ... by Rohan, Rebecca / Black Enterprise

The certification means that Check Point customers can now take full advantage of ScanSafe's security services by simply redirecting all Port 80 traffic for real-time malware scanning and enforcement of policy," said Dan Nadir, vice president, product strategy, ScanSafe.

ScanSafe Achieves OPSEC Certification from Check Point by Business Wire

This really posed a problem since we began to see traffic masquerading as a Port 80 application which could not be effectively detected.

Illinois State University Gains Unprecedented Network Visibility and ... by Business Wire

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