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Chapter 3. Spoofing (3.1 ARP Spoofing)

Chapter 3. Spoofing (3.1 ARP Spoofing). Hoon Ko hoon.ko@ujep.cz Office# 460, Department of Informatics, J. E. Purkinje University. MAC Table. MAC table set: to protect attacks from IP conflict or spoofings. Install before test. Libnet Libpcap DB (Berkeley Database

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Chapter 3. Spoofing (3.1 ARP Spoofing)

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  1. Chapter 3. Spoofing(3.1 ARP Spoofing) Hoon Ko hoon.ko@ujep.cz Office# 460, Department of Informatics, J. E. Purkinje University

  2. MAC Table • MAC table set: to protect attacks from IP conflict or spoofings

  3. Install before test • Libnet • Libpcap • DB (Berkeley Database • Libnidis (Library Network IDS) • OpenSSL

  4. Libnet Root# ./configure Root# make Root# make test Root# make install

  5. Libcap Root# ./configure Root# make Root# make install

  6. DB (Berkeley Database) Root# cd build_unix Root# ../dist/confiugure --enable-compat185 Root# make Root# make install

  7. Libnidis (Library Network IDS) Root# ./configure Root# make Root# make install

  8. OpenSSL Root# ./config Root# make Root# make test Root# make install

  9. ARP Spoofing • ARP: to know from IP address to MAC address • RARP: to know from MAC address to IP address

  10. ARP spoofing tool (fake-1.1.2.rpm) Root# rpm -Uvh fake-1.1.2-1.i386.rpm • Packet reply tool (Fragrouter 1.6) Root# ./configure Root# make

  11. ARP table before attacking • Relay function run before attacking • ARP Spoofing attack start

  12. ARP table after attacking • Fragrouter that it still is attacking

  13. TCPdump / windump check • Catch ‘ls’ typing of client

  14. How to protect? • Set the static MAC table • ex) arp –s IP address MAC address

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