Security Check - icmp, oS, xprobe
OS Fingerprinting 122, fingerprinting Services 126, mapping the Network 127, summary 130, key Terms 130, apply Your Knowledge 131, exercises 131, exam Questions 133, answers to Exam Questions 136 Suggested Reading and Resources 138. State the various ways that active fingerprinting tools work. Pinging with 32 bytes of data: Reply from : bytes32 time 10ms TTL64. Sample exam questions with detailed answers are provided to help you prepare for the Certified Ethical Hacker exam.
The Seven-Step Information Gathering Process
Define footprinting, the process of accumulating data regarding a specific network environment, usually for the purpose of finding ways to intrude into the environment. Tree: IP total length field value is OK tree: Frag bits are OK test: icmp echo request to 68 bytes sent, waiting for reponse. Active fingerprinting tools inject strangely crafted packets into the network to measure how systems respond. This chapter is from the book.
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The identification of active machines is accomplished by means of ping sweeps and port scans. C: ping (Solaris 7 intel pinging with 32 bytes of data: Reply from : bytes32 time10ms TTL255. Understand how to map open ports and identify their underlying applications. The EC-Council divides information gathering into seven basic steps. Common switches include -sT, full connect, and -sS, a stealth scan.
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Icmp Netmask RequestType17, iCMP IP OS IP, total Length. These include gathering information, determining the network range, identifying active machines, finding open ports and access points, OS fingerprinting, fingerprinting services, and mapping the network. Sys-Security Group, iCMP Usage in Scanning Projecticmp, iCMP osxxfyodor Yarochkin Xprobe.
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LOG: Netmask:, lOG: probing: test: UDP to :32132 98 bytes sent, waiting for reponse. Understanding Nmap switches is a required test element.