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Firewall Intrusion Detection System

?????????????????????????. ????????? (Firewall)???????????????????? (Intrusion Detection System). 2. Firewall ???????. Firewall = ?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????. 3. ???????????? Firewall. Protect ?????????????????????????? ???? RuleRule Base ?????????????????????????-??????????????????Access Control ????????????????????? ??????-?????????.

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Firewall Intrusion Detection System

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    1. ??????????????????????????? 1

    2. ????????????????????????? ????????? (Firewall) ???????????????????? (Intrusion Detection System) 2

    3. Firewall ??????? Firewall = ?????????? ???????????????????????????????????? ???????????????????????????????????????? ??????????????????????????????????????? 3

    4. ???????????? Firewall Protect ?????????????????????????? ???? Rule Rule Base ?????????????????????????-?????????????????? Access Control ????????????????????? ??????-????????? 4

    5. ??????????? Firewall ??????????????????????????????????????????????????????? ??????????????????? Firewall ????????????????????????????????????? Firewall ??????????????????????????????????????????????? ??????????????????????????????????????????????? ?????????????????????????????? 5

    6. ????????? Firewall ??????????????????????????????????????????????????????????? ??????????? Packet filtering Proxy Service ???? Application Gateway Stateful Inspection 6

    7. Packet filtering Firewall ???????????? ??????? IP Address ??? Port ????????????? ?????????? ???? Packet ?????????????????????????????????????? 7

    8. Packet filtering… 8

    9. Packet filtering… ????? ?????????? Application ????????????? ????????????????????? ??????? ???????????????????????????????? ???? FTP, ICQ 9

    10. Proxy Service ???? Application Gateway ????????????????? Firewall ???????????????????????????? 2 ?????????? ?????????? ????????????????????????? Application Layer 10

    11. Proxy Service… 11

    12. Proxy Service… ????? ???????????????? ??????????????????? Application ??????? ?????????????? ?????????????????????? 12

    13. Stateful Inspection ????????????????????????????? Packet Filtering ????????????? content ?????????????????????????????????????????????????? ?????????????????????????????????? ????????????????????????????????????? 13

    14. ??????????? Firewall ??????????? Firewall ?????????????????????????????????????????????? ??????????????????????????????????? ??????????? Single Box Screening Router Multi Layer 14

    15. Single Box ?? Firewall ??????????????????????????????????????????? ???????????????????????????????????? Firewall ??????????????? 15

    16. Single Box… 16

    17. Screening Router ??????? Packet Filtering ??? Access Control List (ACL) ???????????????????? Internet ???????????? ??????????????????? ????????????????????????????? Service ????????????????? ?????????????????? Proxy ??????? Bastion host ???????? ????????????????? 17

    18. Screening Router… 18

    19. Multi Layer ?????????????????????? ???????????????????????????????????????? ??? Perimeter Network ???? 19

    20. Multi Layer… 20

    21. ???????????????????? (Intrusion Detection System) ???????????????????????? IDS ????????????????????????????? ??????????????????????????????????????? ???????????????????????????????? ????????????????????????? ??????????????????????????????????? ????????????????? Network ???????????????????????????? IDS ???????????????????? ???????????????????????????????????????????????? ???? Firewall, Antivirus?????? ????????????????????????? ???? ???????????????????????? 21

    22. IDS 22

    23. ????????????? IDS ??????????? 2 ???? Agent ?????????????????????????????????????????????????????? Analysis ??????????????????????????????????? ???????????????????????????? 23

    24. ????????? IDS Host-based IDS ??? ??????????????????????????????????????????????????????? Network-based IDS ??? ?????????????????????????????????? 24

    25. Host-Based IDS ????? ???????????????????????????????????? ? ??????? ?????????????????????????????????????? Log ??? ?????????????????????????? System Call ????????????????????????????????????????? ???????????????????????? Log ?????????????????? ? ?????????????????????????????????????????????????????????????????? ??????? ????????????????????????????????????????? ?????????????????????????????????????????????????????????????? ???????????????????????????????? ??????????? IDS ?????????????????????????????????? ???????????????????? Log File ??? System Call 25

    26. Network-based IDS ????? ??????????????????? ????????????????????????????????????? ?????????????????????????????????????????????? ???????????????? packet ??????????????????????????????????? ??????? ??????????????????????????????????????????????? Signature ??????????????????????????? ??????????????????????????????????????? ?????????????????????????????????????? ????????????????????????????????????????????? ????????????????????????????????????????????????????? 26

    27. ??? ?????????????????????????????????? ..... Secure Socket Layer (SSL) Secure Shell (SSH) Internet Protocol Security (IPsec) Kerberos 27

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