PHP MySQL - Stilson.net

CHAPTER 16 • NETWORKINGwww.it-ebooks.info}echo fgets($http, 1024);?>// Close the connectionfclose($http);This returns the following output (formatted as you would see it in the browser):HTTP/1.1 200 OK Server: Apache/2.2.3 (CentOS) Last-Modified: Tue, 15 Nov 2005 13:24:10 GMTETag: "24ec5-1b6-4059a80bfd280" Accept-Ranges: bytes Content-Type: text/html; charset=UTF-8 Connection: close Date: Mon, 17 May 2010 20:54:02 GMT Age: 1976 Content-Length: 438You have reached this web page by typing "example.com", "example.net", or "example.org"into your web browser.These domain names are reserved for use in documentation and are not available forregistration. See RFC 2606, Section 3.The second example, shown in Listing 16-1, demonstrates how to use fsockopen() to build arudimentary port scanner.Listing 16-1. Creating a Port Scanner with fsockopen()// Give the script enough time to complete the taskini_set("max_execution_time", 120);// Define scan range$rangeStart = 0;$rangeStop = 1024;// Which server to scan?$target = "localhost";// Build an array of port values$range =range($rangeStart, $rangeStop);echo "Scan results for $target";// Execute the scanforeach ($range as $port) {$result = @fsockopen($target, $port,$errno,$errstr,1);if ($result) echo "Socket open at port $port";}Scanning my local machine using this script produces the following output :338