... grabbing. Several applications (including telnet, FTP, HTTP, SNMP, and a host of others) identify themselves and their version in their user name/password challenge screen. This information is called a banner and is very helpful in identifying running applications. We generally record any banners we come across during our penetration testing. This can be done with many applications, including NetCat, which runs on either the UNIX or Windows command line i.e. Telnet Definitions: "The third phase is the process of identifying user accounts and poorly protected computing resources. During the enumeration stage, the hacker connects to computers in the target network and pokes around these systems to gain more information. While the scanning phase might be compared to a knock on the door or a turn of the doorknob to see if it is locked, enumeration could be compared to entering an office and rifling through a file cabinet or desk drawer for ...

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