5.1.6 Switching Ports
Web pages are accessed on servers through ports. A port is entered by following the URL with a colon and the port number. If port is not specified, the browser uses port 80, the default port number for Web pages. Scammers occasionally use other ports to hide their location. In the following example, the IP address after the @ symbol is followed by “:8034”, which represents the specified port of 8034. http://www.citibankonline.com:acKTtF4BD6y4TZlcv6GT5D@64.29.173.91:8034/
Some scammers even hack into a legitimate company’s server and host their Web site on the server using a higher numbered port. The legitimate company may be completely unaware of the fraudulent site.