Ebooks Link Collection and Review

Nmap in the Enterprise. Your Guide to Network Scanning
by : Angela Orebaugh and Becky Pinkard
Publisher : Syngress Publishing
ISBN 13: 978-1-59749-241-6
Copyright © 2008

Overview
Network scanning is the process of discovering active hosts on the network and information about the hosts, such as operating system, active ports, services, and applications. Network scanning is comprised of the following four basic techniques:

• Network Mapping Sending messages to a host that will generate a response

• if the host is active
• Port Scanning Sending messages to a specified port to determine if it is active
• Service and Version Detection Sending specially crafted messages to active ports to generate responses that will indicate the type and version of service running
• OS Detection Sending specially crafted messages to an active host to generate certain responses that will indicate the type of operating system running on the host

In addition to these basic techniques, advanced network scanners can perform other techniques such as masking the origin of the scanning, enabling timing features for stealthy scans, evading perimeter defenses such as firewalls, and providing reporting options.

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Nmap in the Enterprise