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Chapter 2 IP Address Trace

Chapter 2 IP Address Trace. Hoon Ko hoon.ko@ujep.cz Office# 460, Department of Informatics, J . E. Purkinje University. IP Address Goals. Understand a IP address trace All IP have their source and destination address To catch their destination address

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Chapter 2 IP Address Trace

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  1. Chapter 2IP Address Trace Hoon Ko hoon.ko@ujep.cz Office# 460, Department of Informatics, J. E. Purkinje University

  2. IP Address Goals • Understand a IP address trace • All IP have their source and destination address • To catch their destination address • Understand a Traceroute (Tracert)

  3. To check login / establishment

  4. IP address between users in messengers

  5. IP trace with a tracert command

  6. Spade: to trace

  7. Chapter 2Footprinting and Scanning Hoon Ko hoon.ko@ujep.cz Office# 460, Department of Informatics, J. E. Purkinje University

  8. Goals • Understand a Footprinting • Understand a Scan • ping, ICMP • Detect OS • nmap

  9. Understand Footprinting • Take a look all footprintings to have the target’s information

  10. SCAN • To catch two services between service providers and service receivers • What services they use

  11. ping / ICMP • to see their availability to all network services • ICMP using in TCP/IP • to see if my targets are in activation • Echo Request / Echo Reply • Timestamp Request / Time Reply • Information Request / Information Reply • ICMP address mask request / ICMP address mask reply

  12. OS detect • Netcraft using: www.netcraft.com

  13. nmap scan • download: http://nmap.org or command using

  14. nmap open scan: nmap –sTwww.ujep.cz • open can using connect() function.

  15. nmap TCP SYN scan: nmap –sSwww.ujep.cz • SYN scan which is not established

  16. nmap FIN scan: nmap –sF –p 21,23 www.ujep.cz • FIN packet using

  17. nmap fragmentation scan: nmap –f –sS www.ujep.cz

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