{"id":2855,"date":"2020-07-06T12:07:00","date_gmt":"2020-07-06T12:07:00","guid":{"rendered":"https:\/\/liangroup.net\/blog\/?p=2855"},"modified":"2022-01-12T18:22:02","modified_gmt":"2022-01-12T14:52:02","slug":"ospf-protocol-attacks","status":"publish","type":"post","link":"https:\/\/liangroup.net\/blog\/ospf-protocol-attacks\/","title":{"rendered":"\u062a\u0634\u0631\u06cc\u062d \u062d\u0645\u0644\u0627\u062a \u067e\u0631\u0648\u062a\u06a9\u0644 OSPF"},"content":{"rendered":"\t\t
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\u062d\u0645\u0644\u0627\u062a \u062f\u0631 OSPF \u0628\u0637\u0648\u0631 \u0645\u0639\u0645\u0648\u0644 \u0628\u0647 \u062d\u0645\u0644\u0627\u062a\u06cc \u06af\u0641\u062a\u0647 \u0645\u06cc\u200c\u0634\u0648\u062f \u06a9\u0647 \u0628\u0631 \u0631\u0648\u06cc \u0622\u0633\u06cc\u0628\u200c\u067e\u0630\u06cc\u0631\u06cc\u200c\u0647\u0627\u06cc<\/strong><\/a> \u0627\u0644\u06af\u0648\u0631\u06cc\u062a\u0645 Network LSA \u0648 \u067e\u0631\u0648\u062a\u06a9\u0644 Hello \u0635\u0648\u0631\u062a \u0645\u06cc\u200c\u06af\u06cc\u0631\u062f. Network LSA \u0647\u0627 \u062a\u0648\u0633\u0637 Designated Router (DR) \u0627\u0631\u0633\u0627\u0644 \u0645\u06cc\u200c\u0634\u0648\u062f \u06a9\u0647 \u0627\u06cc\u0646 \u0631\u0648\u062a\u0631 \u062f\u0631 \u0645\u06cc\u0627\u0646 \u0631\u0648\u062a\u0631\u0647\u0627\u06cc \u0645\u062c\u0627\u0648\u0631 \u062f\u0631 \u0634\u0628\u06a9\u0647 \u062a\u0648\u0633\u0637 \u0634\u0627\u062e\u0635\u200c\u0647\u0627\u06cc\u06cc \u06a9\u0647 \u0627\u0632 \u067e\u06cc\u0634 \u062a\u0639\u06cc\u06cc\u0646 \u0634\u062f\u0647 \u0627\u0633\u062a (\u06a9\u0647 \u06af\u0627\u0647\u0627 \u0647\u0645 \u0645\u06cc \u062a\u0648\u0627\u0646\u0646\u062f \u0628\u0635\u0648\u0631\u062a \u0645\u0642\u062f\u0627\u0631 \u067e\u06cc\u0634 \u0641\u0631\u0636 \u0628\u0627\u0634\u0646\u062f)\u060c \u0627\u0648\u0644\u0648\u06cc\u062a\u200c\u0628\u0646\u062f\u06cc \u0645\u06cc\u200c\u0634\u0648\u0646\u062f.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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\u062d\u0645\u0644\u0627\u062a OSPF \u0628\u0631 \u0631\u0648\u06cc DR<\/h2>

\u062f\u0648 \u0646\u0648\u0639 \u06a9\u0644\u06cc \u0648 \u0627\u0635\u0644\u06cc \u0627\u0632 \u0634\u0628\u06a9\u0647 \u0648\u062c\u0648\u062f \u062f\u0627\u0631\u062f\u061b Transit \u0648 Stub. \u0634\u0628\u06a9\u0647\u200c\u0647\u0627\u06cc Transit \u0627\u062c\u0627\u0632\u0647 \u0645\u06cc\u200c\u062f\u0647\u0646\u062f \u062a\u0627 \u067e\u06a9\u062a\u200c\u0647\u0627\u06cc \u062e\u0627\u0631\u062c\u06cc \u0627\u0632 \u0637\u0631\u06cc\u0642 \u0622\u0646\u0647\u0627 \u0628\u0647 \u0645\u06a9\u0627\u0646\u200c\u0647\u0627\u06cc \u062f\u06cc\u06af\u0631 \u0627\u0646\u062a\u0642\u0627\u0644 \u06cc\u0627\u0628\u062f\u060c \u062f\u0631 \u062d\u0627\u0644\u06cc \u06a9\u0647 \u0634\u0628\u06a9\u0647\u200c\u0647\u0627\u06cc Stub \u0686\u0646\u06cc\u0646 \u0627\u0645\u06a9\u0627\u0646\u06cc \u0646\u062f\u0627\u0631\u0646\u062f.<\/p>

\u0648\u0642\u062a\u06cc \u06a9\u0647 \u06cc\u06a9 \u0634\u0628\u06a9\u0647 Transit \u0627\u0632 Network LSA \u0647\u0627\u06cc \u0634\u0628\u06a9\u0647 \u062e\u0648\u062f \u0645\u062d\u0631\u0648\u0645 \u0634\u0648\u062f\u060c Stub \u0645\u062d\u0633\u0648\u0628 \u062e\u0648\u0627\u0647\u062f \u0634\u062f. \u0628\u0631\u0627\u06cc \u062d\u0645\u0644\u0627\u062a\u06cc \u06a9\u0647 \u0628\u0631\u0631\u0648\u06cc DR \u0627\u0646\u062c\u0627\u0645 \u0645\u06cc\u200c\u0634\u0648\u062f\u060c \u06cc\u06a9\u06cc \u0627\u0632 \u0633\u0646\u0627\u0631\u06cc\u0648\u0647\u0627\u06cc \u0632\u06cc\u0631 \u0645\u0645\u06a9\u0646 \u0627\u0633\u062a:<\/p>

  1. \u062e\u0648\u062f\u0645\u0627\u0646 \u0628\u0639\u0646\u0648\u0627\u0646 DR\/BDR \u0627\u0646\u062a\u062e\u0627\u0628 \u0634\u0648\u06cc\u0645.<\/li>
  2. \u0627\u0646\u062a\u062e\u0627\u0628 \u0634\u062f\u0646 \u06cc\u06a9 \u0631\u0648\u062a\u0631 \u062f\u06cc\u06af\u0631 (\u06a9\u0647 \u062f\u0631 \u0634\u0628\u06a9\u0647 \u0645\u0648\u062c\u0648\u062f \u0627\u0633\u062a) \u0628\u0639\u0646\u0648\u0627\u0646 DR\/BDR \u0628\u0627 \u062c\u0639\u0644 \u067e\u06cc\u0627\u0645\u200c\u0647\u0627\u06cc \u0647\u0645\u0627\u0646 \u0631\u0648\u062a\u0631.<\/li>
  3. \u062a\u063a\u06cc\u06cc\u0631 DR \u0645\u062a\u063a\u06cc\u0631\u060c \u0628\u0647 \u06cc\u06a9 DR \u0646\u0627\u0645\u0639\u062a\u0628\u0631.<\/li>
  4. \u0633\u0627\u062e\u062a \u06cc\u06a9 \u0631\u0648\u062a\u0631 \u0641\u0627\u0646\u062a\u0648\u0645 \u0628\u0647 \u0639\u0646\u0648\u0627\u0646 DR\/BDR<\/li><\/ol>

    \u062f\u0631 \u0627\u06cc\u0646 \u06cc\u0627\u062f\u062f\u0627\u0634\u062a \u06f3 \u0645\u0648\u0631\u062f \u0627\u0648\u0644 \u0627\u0632 \u06af\u0632\u06cc\u0646\u0647\u200c\u0647\u0627\u06cc \u0628\u0627\u0644\u0627\u00a0 \u0631\u0627 \u0628\u0647 \u0647\u0645\u0631\u0627\u0647 \u06f3 \u0646\u0648\u0639 \u062d\u0645\u0644\u0647 \u0645\u062e\u062a\u0644\u0641 \u0628\u0631\u0631\u0633\u06cc \u0645\u06cc\u200c\u06a9\u0646\u06cc\u0645.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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    1. \u0627\u0646\u062a\u062e\u0627\u0628 \u0634\u062f\u0646 \u062e\u0648\u062f\u0645\u0627\u0646 \u0628\u0639\u0646\u0648\u0627\u0646 DR<\/h2>

    \u0627\u0644\u06af\u0648\u0631\u06cc\u062a\u0645 \u0627\u0646\u062a\u062e\u0627\u0628 DR\/BDR \u0628\u0627 \u062a\u0648\u062c\u0647 \u0628\u0647 RFC2328 \u0628\u062e\u0634 \u06f9\u066b\u06f3 \u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u062f \u062a\u0648\u0633\u0637 \u062d\u0627\u0644\u062a\u200c\u0647\u0627\u06cc \u06cc\u06a9 \u0627\u06cc\u0646\u062a\u0631\u0641\u06cc\u0633 \u0627\u0646\u062c\u0627\u0645 \u0634\u0648\u062f. \u0628\u0627 \u062a\u0648\u062c\u0647 \u0628\u0647 RFC \u0630\u06a9\u0631 \u0634\u062f\u0647\u060c \u062d\u0627\u0644\u062a\u200c\u0647\u0627\u06cc \u06cc\u06a9 \u0627\u06cc\u0646\u062a\u0631\u0641\u06cc\u0633 \u062a\u0648\u0633\u0637 \u0631\u0648\u06cc\u062f\u0627\u062f\u0647\u0627\u06cc\u06cc \u062a\u063a\u06cc\u06cc\u0631 \u06a9\u0646\u062f \u06a9\u0647 \u0628\u062f\u06cc\u0646 \u0635\u0648\u0631\u062a \u0627\u0633\u062a:<\/p>

    • BackupSeen<\/li>
    • WaitTimer<\/li>
    • NeighboreChange<\/li><\/ul>

      \u0645\u0627 \u0627\u0632 \u062d\u0627\u0644\u062a \u0633\u0648\u0645 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u062e\u0648\u0627\u0647\u06cc\u0645 \u0646\u0645\u0648\u062f\u060c \u0628\u0647 \u0646\u0642\u0644 \u0627\u0632 RFC:<\/p>

      State(s): DR Other, Backup or DR<\/p>

      Event: NeighborChange<\/p>

      New state: Depends upon action routine.<\/p>

      Action: Recalculate the attached network\u2019s Backup Designated<\/p>

      Router and Designated Router, as shown in Section<\/p>

      \u06f9\u066b\u06f4\u066bAs a result of this calculation, the new state<\/p>

      of the interface will be either DR Other, Backup or DR.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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      \u0646\u06a9\u062a\u0647 \u0627\u0635\u0644\u06cc \u062e\u0637\u0648\u0637 \u0628\u0627\u0644\u0627 \u0627\u06cc\u0646 \u0627\u0633\u062a \u06a9\u0647 \u0627\u06af\u0631 \u0647\u0645\u0633\u0627\u06cc\u0647\u200c\u0627\u06cc \u062a\u063a\u06cc\u06cc\u0631 \u06a9\u0646\u062f DR \u0648 BDR \u062f\u0648\u0628\u0627\u0631\u0647 \u0627\u0646\u062a\u062e\u0627\u0628 \u062e\u0648\u0627\u0647\u0646\u062f \u0634\u062f.<\/p>

      \u0627\u06cc\u0646 Election \u0647\u0646\u06af\u0627\u0645\u06cc \u0627\u062a\u0641\u0627\u0642 \u0645\u06cc\u200c\u0627\u0641\u062a\u062f \u06a9\u0647 \u06cc\u06a9\u06cc \u0627\u0632 \u0647\u0645\u0633\u0627\u06cc\u06af\u0627\u0646 \u062a\u063a\u06cc\u06cc\u0631 \u06a9\u0646\u062f. \u0628\u0631\u0627\u06cc \u0627\u0646\u062c\u0627\u0645 \u0627\u06cc\u0646 \u06a9\u0627\u0631 \u0645\u06cc\u200c\u0628\u0627\u06cc\u0633\u062a \u062e\u0648\u062f\u0645\u0627\u0646 \u0631\u0627 \u0628\u0639\u0646\u0648\u0627\u0646 DR \u0628\u0647 \u0634\u0628\u06a9\u0647 \u0645\u0639\u0631\u0641\u06cc \u0646\u0645\u0627\u06cc\u06cc\u0645\u061b \u0628\u062f\u06cc\u0646 \u0635\u0648\u0631\u062a \u06a9\u0647 \u0634\u0646\u0627\u0633\u0647 \u0631\u0648\u062a\u0631 \u0631\u0627 \u062f\u0631 \u0641\u06cc\u0644\u062f Designated Router \u0627\u0632 Hello Packet \u0642\u0631\u0627\u0631 \u0645\u06cc\u200c\u062f\u0647\u06cc\u0645 \u0648 \u0627\u0631\u0633\u0627\u0644 \u0645\u06cc\u200c\u0646\u0645\u0627\u06cc\u06cc\u0645 (\u0628\u0631\u0627\u06cc \u062c\u0632\u06cc\u06cc\u0627\u062a \u0628\u06cc\u0634\u062a\u0631 \u0645\u06cc\u200c\u062a\u0648\u0627\u0646 \u0628\u0647 RFC2328 \u0648 \u0628\u062e\u0634 A.3.2 \u0645\u0631\u0627\u062c\u0639\u0647 \u0646\u0645\u0648\u062f).<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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      \u0633\u067e\u0633 \u062a\u0645\u0627\u0645\u06cc \u0631\u0648\u062a\u0631\u0647\u0627 \u0634\u0631\u0648\u0639 \u0628\u0647 \u0627\u062c\u0631\u0627\u06cc \u0627\u0644\u06af\u0648\u0631\u06cc\u062a\u0645 \u0627\u0646\u062a\u062e\u0627\u0628 DR\/BDR \u062e\u0648\u0627\u0647\u0646\u062f \u0646\u0645\u0648\u062f (RFC2328 \u0628\u062e\u0634 \u06f9\u066b\u06f4). \u062d\u0627\u0644 \u0645\u06cc\u200c\u0628\u0627\u06cc\u0633\u062a\u06cc \u0631\u0648\u062a\u0631 \u062e\u0648\u062f\u0645\u0627\u0646 \u0631\u0627 \u0628\u0627 \u0642\u0631\u0627\u0631 \u062f\u0627\u062f\u0646 \u0622\u062e\u0631\u06cc\u0646 \u0645\u0642\u062f\u0627\u0631 \u06cc\u0639\u0646\u06cc \u0645\u0642\u062f\u0627\u0631 \u06f0xFF \u0628\u0631\u0627\u06cc \u0641\u06cc\u0644\u062f Router Priority \u062f\u0631 Hello Message \u06a9\u0627\u0646\u062f\u06cc\u062f \u06a9\u0646\u06cc\u0645. \u0645\u0645\u06a9\u0646 \u0627\u0633\u062a \u06cc\u06a9 \u0631\u0648\u062a\u0631 \u062f\u06cc\u06af\u0631 \u062f\u0631 \u0634\u0628\u06a9\u0647 \u0647\u0645\u06cc\u0646 \u0645\u0642\u062f\u0627\u0631 \u0631\u0627 \u062f\u0627\u0634\u062a\u0647 \u0628\u0627\u0634\u062f\u061b \u0628\u0647 \u0647\u0631\u062d\u0627\u0644 \u0628\u0627\u0644\u0627\u062a\u0631\u06cc\u0646 \u0645\u0642\u062f\u0627\u0631 ID \u0628\u0639\u0646\u0648\u0627\u0646 DR \u0627\u0646\u062a\u062e\u0627\u0628 \u062e\u0648\u0627\u0647\u062f \u0634\u062f. \u0628\u0639\u062f \u0627\u0632 \u0627\u0646\u062a\u062e\u0627\u0628 \u0634\u062f\u0646 DR\/BDR \u062a\u0645\u0627\u0645\u06cc \u0631\u0648\u062a\u0631\u0647\u0627 \u0628\u0627 DR \u0628\u0627\u06cc\u0633\u062a\u06cc Convergence \u0634\u0648\u0646\u062f. \u0628\u0639\u062f \u0627\u0632 \u0627\u06cc\u0646\u06a9\u0647 \u0628\u0639\u0646\u0648\u0627\u0646 DR \u0627\u0646\u062a\u062e\u0627\u0628 \u0634\u062f\u06cc\u0645 \u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u06cc\u0645 \u062f\u0648 \u062d\u0645\u0644\u0647 \u0631\u0627 \u067e\u06cc\u0627\u062f\u0647\u200c\u0633\u0627\u0632\u06cc \u0646\u0645\u0627\u06cc\u06cc\u0645.<\/p>

      1. \u0645\u062d\u0631\u0648\u0645\u06cc\u062a \u0627\u0632 Network LSA :<\/strong> \u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u06cc\u0645 LSA \u0647\u0627 \u0631\u0627 \u0627\u0631\u0633\u0627\u0644 \u0646\u06a9\u0646\u06cc\u0645 \u0648 \u06cc\u0627 \u0627\u0631\u0633\u0627\u0644 \u06a9\u0646\u06cc\u0645 \u0628\u062f\u0648\u0646 \u0627\u06cc\u0646\u06a9\u0647 \u0631\u0648\u062a\u0631\u06cc \u0631\u0627 \u062f\u0631 LSA \u0647\u0627\u06cc\u0645\u0627\u0646 \u0630\u06a9\u0631 \u0646\u0645\u0627\u06cc\u06cc\u0645. \u0627\u06cc\u0646 \u0645\u0633\u0626\u0644\u0647 \u062f\u0631 RFC \u0628\u062e\u0634 \u06f1\u06f2\u066b\u06f4\u066b\u06f2 \u062a\u0648\u0636\u06cc\u062d \u062f\u0627\u062f\u0647 \u0634\u062f\u0647 \u0627\u0633\u062a \u06a9\u0647 \u06cc\u06a9 \u0634\u0628\u06a9\u0647 Transit \u0628\u0627\u06cc\u0633\u062a\u06cc \u062f\u0648 \u06cc\u0627 \u0686\u0646\u062f \u0631\u0648\u062a\u0631 \u0645\u062a\u0635\u0644 \u062f\u0627\u0634\u062a\u0647 \u0628\u0627\u0634\u062f. \u067e\u0633 \u062f\u0631 \u063a\u06cc\u0631 \u0627\u06cc\u0646 \u0635\u0648\u0631\u062a\u060c \u0628\u0635\u0648\u0631\u062a Stub \u062e\u0648\u0627\u0647\u062f \u0628\u0648\u062f.
        2. \u062a\u06a9\u0631\u0627\u0631 \u0639\u0645\u0644\u06cc\u0627\u062a \u0627\u0646\u062a\u062e\u0627\u0628:<\/strong> \u0648\u0642\u062a\u06cc \u0628\u0639\u0646\u0648\u0627\u0646 DR \u0627\u0646\u062a\u062e\u0627\u0628 \u0634\u0648\u06cc\u0645\u060c DR \u0642\u0628\u0644\u06cc \u0627\u0632 \u062f\u0627\u0645\u0646\u0647 Flush \u062e\u0648\u0627\u0647\u062f \u0634\u062f. \u0627\u06af\u0631 \u0628\u0639\u0646\u0648\u0627\u0646 DR \u0627\u0646\u062a\u062e\u0627\u0628 \u0634\u0648\u06cc\u0645 \u0648\u0644\u06cc \u062e\u0648\u062f\u0645\u0627\u0646 Hello Message \u0631\u0627 \u0627\u0631\u0633\u0627\u0644 \u06a9\u0646\u06cc\u0645\u060c \u0628\u062f\u06cc\u0646 \u0645\u0639\u0646\u06cc \u0627\u0633\u062a \u06a9\u0647 \u0646\u0645\u06cc\u200c\u062e\u0648\u0627\u0647\u06cc\u0645 DR \u0634\u0648\u06cc\u0645 \u0648 \u0628\u0627\u0632 \u062f\u0648\u0628\u0627\u0631\u0647 \u0639\u0645\u0644\u06cc\u0627\u062a \u0627\u0646\u062a\u062e\u0627\u0628 DR\/BDR \u0627\u0646\u062c\u0627\u0645 \u062e\u0648\u0627\u0647\u062f \u0634\u062f. \u0647\u0646\u06af\u0627\u0645\u06cc \u06a9\u0647 \u0631\u0648\u062a\u0631 DR \u0627\u0646\u062a\u062e\u0627\u0628 \u0634\u0648\u062f \u0628\u0627\u06cc\u0633\u062a\u06cc Adjacency \u062c\u062f\u06cc\u062f\u06cc \u0628\u06cc\u0646 DR \u0648 \u062f\u06cc\u06af\u0631 \u0631\u0648\u062a\u0631\u0647\u0627 \u0627\u06cc\u062c\u0627\u062f \u0634\u0648\u062f \u06a9\u0647 \u0627\u06cc\u0646 \u06a9\u0627\u0631 \u0628\u0627 Sync \u0646\u0645\u0648\u062f\u0646 LSDB \u0635\u0648\u0631\u062a \u0645\u06cc\u200c\u06af\u06cc\u0631\u062f \u0648 \u062f\u0631 \u0627\u06cc\u0646 \u0645\u062f\u062a \u0634\u0628\u06a9\u0647 \u0642\u0627\u062f\u0631 \u0628\u0647 \u0627\u0646\u062a\u0642\u0627\u0644 \u062a\u0631\u0627\u0641\u06cc\u06a9 \u0646\u06cc\u0633\u062a.<\/li><\/ol>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
        \n\t\t\t\t\t\t
        \n\t\t\t\t\t
        \n\t\t\t
        \n\t\t\t\t\t\t
        \n\t\t\t\t
        \n\t\t\t\t\t\t\t\t\t

        2. \u0627\u0646\u062a\u062e\u0627\u0628 \u0631\u0648\u062a\u0631 \u0645\u062c\u0627\u0648\u0631 \u0628\u0639\u0646\u0648\u0627\u0646 DR<\/h2>

        \u0627\u06cc\u0646 \u062d\u0645\u0644\u0647 \u0634\u0628\u06cc\u0647 \u0628\u0647 \u062d\u0645\u0644\u0647 \u0642\u0628\u0644\u06cc \u0627\u0633\u062a\u060c \u0627\u0645\u0627 \u062f\u0648 \u0645\u0632\u06cc\u062a \u062f\u0627\u0631\u062f \u06a9\u0647 \u0628\u0627\u0639\u062b \u0628\u0631\u062a\u0631\u06cc \u062e\u0648\u0627\u0647\u062f \u0634\u062f:<\/p>

        1. \u0627\u06cc\u0646 \u062d\u0645\u0644\u0647 \u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u062f \u0647\u0631 \u0631\u0648\u062a\u0631 \u0645\u062c\u0627\u0648\u0631 \u0631\u0627 \u0647\u062f\u0641 \u0642\u0631\u0627\u0631 \u062f\u0647\u062f.<\/li>
        2. \u0631\u0648\u062a\u0631 \u0646\u0641\u0648\u0630\u06af\u0631 \u062f\u0631 \u062d\u0645\u0644\u0647 \u0645\u0642\u0635\u0631 \u0634\u0646\u0627\u062e\u062a\u0647 \u0646\u0645\u06cc\u200c\u0634\u0648\u062f\u060c \u0686\u0648\u0646 \u067e\u06cc\u0627\u0645\u200c\u0647\u0627\u06cc \u0631\u0648\u062a\u0631 \u062f\u06cc\u06af\u0631\u06cc \u0631\u0627 \u062c\u0639\u0644 \u0645\u06cc\u200c\u06a9\u0646\u062f \u0648 \u0628\u0647 \u0627\u06cc\u0646 \u062a\u0631\u062a\u06cc\u0628 \u0622\u0646 \u0631\u0648\u062a\u0631 \u0645\u0642\u0635\u0631 \u0634\u0646\u0627\u062e\u062a\u0647 \u062e\u0648\u0627\u0647\u062f \u0634\u062f.<\/li><\/ol>

          \u0627\u062c\u0631\u0627\u06cc \u0627\u06cc\u0646 \u062d\u0645\u0644\u0647 \u0628\u062f\u06cc\u0646 \u0634\u0631\u062d \u0627\u0633\u062a:
          \u0634\u0628\u06a9\u0647 \u0645\u0648\u0631\u062f \u062d\u0645\u0644\u0647 \u0627\u0646\u062a\u062e\u0627\u0628 \u0634\u062f\u0647 \u0627\u0633\u062a. \u0631\u0648\u062a\u0631\u0645\u0627\u0646 (\u0646\u0641\u0648\u0630\u06af\u0631) \u0628\u0633\u062a\u0647 Hello \u0645\u0639\u062a\u0628\u0631 \u0627\u0631\u0633\u0627\u0644 \u0645\u06cc\u200c\u06a9\u0646\u062f\u060c \u0647\u0645\u0686\u0646\u06cc\u0646 \u06cc\u06a9 \u067e\u06a9\u062a Malicious Hello \u0628\u0631\u0627\u06cc \u062a\u0645\u0627\u0645\u06cc \u0631\u0648\u062a\u0631\u0647\u0627\u06cc Adjacent \u0634\u062f\u0647 \u0628\u0647 \u062c\u0632 \u0631\u0648\u062a\u0631\u06cc \u06a9\u0647 \u0645\u06cc\u200c\u062e\u0648\u0627\u0647\u06cc\u0645 \u0645\u0648\u0631\u062f \u062d\u0645\u0644\u0647 \u0642\u0631\u0627\u0631 \u062f\u0647\u06cc\u0645 (\u0631\u0648\u062a\u0631 \u0642\u0631\u0628\u0627\u0646\u06cc) \u0645\u06cc\u200c\u0641\u0631\u0633\u062a\u062f. Malicious Hello \u06cc\u06a9 \u067e\u06cc\u0627\u0645 Hello \u0627\u0633\u062a \u06a9\u0647 \u0627\u0632 \u0633\u0645\u062a \u0631\u0648\u062a\u0631 \u0642\u0631\u0628\u0627\u0646\u06cc \u062c\u0639\u0644 \u0646\u0645\u0648\u062f\u0647\u200c\u0627\u06cc\u0645. \u062f\u0631 \u0627\u06cc\u0646 \u067e\u06cc\u0627\u0645 \u0641\u06cc\u0644\u062f DR \u0628\u0647 ID \u0631\u0648\u062a\u0631\u0647\u0627\u06cc \u0642\u0631\u0628\u0627\u0646\u06cc \u062a\u063a\u06cc\u06cc\u0631 \u067e\u06cc\u062f\u0627 \u0645\u06cc\u200c\u06a9\u0646\u062f.<\/p>

          \u0628\u0646\u0627\u0628\u0631\u0627\u06cc\u0646 \u0631\u0648\u062a\u0631\u0647\u0627\u06cc Adjacent \u062f\u0631 \u0634\u0628\u06a9\u0647 \u062f\u06cc\u062a\u0627\u0628\u06cc\u0633\u200c\u0647\u0627\u06cc \u062e\u0648\u062f \u0631\u0627 \u0628\u0627 DR \u0628\u0647 \u0631\u0648\u0632 \u0645\u06cc\u200c\u06a9\u0646\u0646\u062f. \u067e\u0633 \u0631\u0648\u062a\u0631\u0647\u0627\u06cc \u0645\u062a\u0635\u0644 \u0634\u062f\u0647 \u0628\u0647 \u0634\u0628\u06a9\u0647 \u0628\u0631 \u0627\u06cc\u0646 \u0628\u0627\u0648\u0631\u0646\u062f \u06a9\u0647 \u0631\u0648\u062a\u0631 \u062d\u0645\u0644\u0647 DR \u0627\u0633\u062a. \u0631\u0648\u062a\u0631 \u0642\u0631\u0628\u0627\u0646\u06cc \u0646\u0645\u06cc\u200c\u062f\u0627\u0646\u062f \u06a9\u0647 \u0646\u0642\u0634 DR \u0631\u0627 \u062f\u0631 \u0634\u0628\u06a9\u0647 \u062f\u0627\u0631\u062f\u060c \u0628\u0646\u0627\u0628\u0631\u0627\u06cc\u0646 Network LSA \u0628\u0631\u0631\u0648\u06cc \u0634\u0628\u06a9\u0647 \u0627\u0631\u0633\u0627\u0644 \u0646\u0645\u06cc\u200c\u06a9\u0646\u062f \u0648 \u0627\u062b\u0631 \u0622\u0646 \u0628\u0631\u0631\u0648\u06cc \u0634\u0628\u06a9\u0647 \u0645\u0627\u0646\u0646\u062f \u062d\u0645\u0644\u0647 \u0634\u0645\u0627\u0631\u0647 \u06f1 \u0627\u0633\u062a.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

          \n\t\t\t\t\t\t
          \n\t\t\t\t\t
          \n\t\t\t
          \n\t\t\t\t\t\t
          \n\t\t\t\t
          \n\t\t\t\t\t\t\t\t\t

          3. \u062a\u063a\u06cc\u06cc\u0631 DR \u0645\u0639\u062a\u0628\u0631 \u0628\u0647 \u06cc\u06a9 DR \u0646\u0627\u0645\u0639\u062a\u0628\u0631<\/h2>

          \u0627\u06cc\u0646 \u0645\u062a\u062f \u0646\u0641\u0648\u0630\u06af\u0631 \u0631\u0627 \u0642\u0627\u062f\u0631 \u0645\u06cc\u200c\u0633\u0627\u0632\u062f \u06a9\u0647 \u06cc\u06a9 \u0631\u0648\u062a\u0631 \u0631\u0627\u0647 \u062f\u0648\u0631 \u0631\u0627 \u0645\u0648\u0631\u062f \u062d\u0645\u0644\u0647 \u0642\u0631\u0627\u0631 \u062f\u0647\u062f \u06a9\u0647 \u0627\u0632 \u0637\u0631\u06cc\u0642 \u0634\u0628\u06a9\u0647\u200c\u0647\u0627\u06cc \u0645\u062e\u062a\u0644\u0641 \u0628\u0647 \u0634\u0628\u06a9\u0647 \u0646\u0641\u0648\u0630\u06af\u0631\u0645\u0627\u0646 \u0645\u0631\u062a\u0628\u0637 \u0627\u0633\u062a. \u0628\u0627 \u0627\u06cc\u0646 \u062d\u0645\u0644\u0647 \u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u06cc\u0645 \u0631\u0641\u062a\u0627\u0631\u0647\u0627\u06cc \u0634\u0628\u06cc\u0647 \u0628\u0647 \u062d\u0645\u0644\u0647 \u0634\u0645\u0627\u0631\u0647 \u062f\u0648 \u062f\u0627\u0634\u062a\u0647 \u0628\u0627\u0634\u06cc\u0645\u061b \u06cc\u0639\u0646\u06cc \u0628\u0647 \u0631\u0648\u062a\u0631 \u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u067e\u06cc\u0627\u0645 Hello \u0627\u0636\u0627\u0641\u06cc \u062d\u0645\u0644\u0647 \u0645\u06cc\u200c\u06a9\u0646\u062f \u06a9\u0647 \u067e\u06cc\u0627\u0645 \u0647\u0627 \u0631\u0627 \u0627\u0632 \u0633\u0645\u062a \u062e\u0648\u062f\u0634 \u0628\u0631\u0627\u06cc \u0631\u0648\u062a\u0631 \u0631\u0627\u0647 \u062f\u0648\u0631 \u0627\u0632 \u0637\u0631\u06cc\u0642 unicast \u0627\u0631\u0633\u0627\u0644 \u0645\u06cc \u06a9\u0646\u062f.<\/p>

          \u067e\u06cc\u063a\u0627\u0645 \u0647\u0627\u06cc Hello \u062a\u063a\u06cc\u06cc\u0631 \u0645\u06cc \u06a9\u0646\u062f : DR \u0631\u0627 ID \u062e\u0648\u062f \u0631\u0648\u062a\u0631 \u0646\u0641\u0648\u0630\u06af\u0631 \u0642\u0631\u0627\u0631 \u0645\u06cc\u200c\u062f\u0647\u062f \u0648 Priority \u0631\u0627 \u0628\u0647 \u0635\u0648\u0631\u062a \u0628\u0627\u0644\u0627\u062a\u0631\u06cc\u0646 \u0645\u0642\u062f\u0627\u0631 \u0645\u0645\u06a9\u0646 \u062a\u0639\u06cc\u06cc\u0646 \u0645\u06cc\u200c\u06a9\u0646\u062f. \u0645\u062d\u062a\u0648\u0627\u06cc \u067e\u06cc\u0627\u0645 \u0647\u0627 \u0631\u0627 \u0637\u0648\u0631\u06cc \u0627\u06cc\u062c\u0627\u062f \u0645\u06cc \u06a9\u0646\u062f \u06a9\u0647 \u0628\u0646\u0638\u0631 \u0628\u0631\u0633\u062f \u06cc\u06a9\u06cc \u0627\u0632 \u0631\u0648\u062a\u0631\u0647\u0627\u06cc \u0645\u0648\u062c\u0648\u062f \u062f\u0631 \u0634\u0628\u06a9\u0647 \u0627\u0633\u062a.<\/p>

          \u0627\u06cc\u0646 \u06a9\u0627\u0631 \u0628\u0627\u0639\u062b \u0645\u06cc \u0634\u0648\u062f \u06a9\u0647 \u0631\u0648\u062a\u0631\u06cc \u06a9\u0647 \u0645\u06cc \u062e\u0648\u0627\u0647\u06cc\u0645 \u0645\u0648\u0631\u062f \u062d\u0645\u0644\u0647 \u0642\u0631\u0627\u0631 \u06af\u06cc\u0631\u062f\u060c \u0641\u06a9\u0631 \u06a9\u0646\u062f DR \u062a\u063a\u06cc\u06cc\u0631 \u06a9\u0631\u062f\u0647 \u0627\u0633\u062a \u0648 \u0631\u0648\u062a\u0631\u0645\u0627\u0646 DR \u0627\u0633\u062a. \u062a\u0627\u062b\u06cc\u0631 \u0627\u06cc\u0646 \u062d\u0645\u0644\u0647 \u0628\u062f\u06cc\u0646 \u0635\u0648\u0631\u062a \u062e\u0648\u0627\u0647\u062f \u0628\u0648\u062f \u06a9\u0647 \u0634\u0628\u06a9\u0647 \u0641\u0639\u0627\u0644\u06cc\u062a \u062e\u0648\u062f \u0631\u0627\u00a0\u00a0\u0627\u0632 \u062d\u0627\u0644\u062a Transit \u0645\u062a\u0648\u0642\u0641 \u06a9\u0631\u062f\u0647 \u0648 \u0628\u0647 \u062d\u0627\u0644\u062a Stub \u0639\u0645\u0644 \u0645\u06cc \u06a9\u0646\u062f. \u062f\u0631 \u0627\u06cc\u0646 \u062d\u0645\u0644\u0647 \u0631\u062f\u06cc\u0627\u0628\u06cc \u0645\u0647\u0627\u062c\u0645 \u0631\u0627\u062d\u062a\u062a\u0631 \u0627\u0633\u062a\u060c \u0686\u0631\u0627 \u06a9\u0647 \u067e\u06cc\u063a\u0627\u0645 \u0647\u0627\u06cc Hello \u0631\u0627 \u0628\u0647 \u0631\u0648\u062a\u0631 \u0645\u0648\u0631\u062f \u062d\u0645\u0644\u0647 \u0645\u06cc \u0641\u0631\u0633\u062a\u062f<\/span> \u0648 \u0628\u0627 \u0627\u06cc\u0646 \u067e\u06cc\u063a\u0627\u0645 \u0647\u0627 \u0631\u0627\u062d\u062a \u0645\u06cc \u062a\u0648\u0627\u0646 \u0631\u062f\u06cc\u0627\u0628\u06cc \u06a9\u0631\u062f \u0648 \u0628\u0647 \u0645\u0646\u0628\u0639 \u0622\u0646 \u0631\u0633\u06cc\u062f.<\/span><\/p>

          \u062a\u0645\u0627\u0645\u06cc \u062d\u0645\u0644\u0627\u062a \u0631\u0627 \u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u06cc\u062f \u0628\u0627 \u06cc\u06a9 \u0631\u0648\u062a\u0631 \u0627\u06cc\u062c\u0627\u062f \u0634\u062f\u0647 \u0648 \u062a\u062d\u062a \u06a9\u0646\u062a\u0631\u0644 \u062f\u0631 \u0634\u0628\u06a9\u0647 \u0645\u062b\u0644 Quagga \u0648 \u0647\u0645\u0686\u0646\u06cc\u0646 \u0627\u06cc\u062c\u0627\u062f \u067e\u06a9\u062a \u0647\u0627 \u062a\u0648\u0633\u0637 Scapy \u0627\u0646\u062c\u0627\u0645 \u0628\u062f\u0647\u06cc\u062f.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

          \u062d\u0645\u0644\u0627\u062a \u062f\u0631 OSPF \u0628\u0637\u0648\u0631 \u0645\u0639\u0645\u0648\u0644 \u0628\u0647 \u062d\u0645\u0644\u0627\u062a\u06cc \u06af\u0641\u062a\u0647 \u0645\u06cc\u200c\u0634\u0648\u062f \u06a9\u0647 \u0628\u0631 \u0631\u0648\u06cc \u0622\u0633\u06cc\u0628\u200c\u067e\u0630\u06cc\u0631\u06cc\u200c\u0647\u0627\u06cc \u0627\u0644\u06af\u0648\u0631\u06cc\u062a\u0645 Network LSA \u0648 \u067e\u0631\u0648\u062a\u06a9\u0644 Hello \u0635\u0648\u0631\u062a \u0645\u06cc\u200c\u06af\u06cc\u0631\u062f. Network LSA \u0647\u0627 \u062a\u0648\u0633\u0637 Designated Router (DR) \u0627\u0631\u0633\u0627\u0644 \u0645\u06cc\u200c\u0634\u0648\u062f \u06a9\u0647 \u0627\u06cc\u0646 \u0631\u0648\u062a\u0631 \u062f\u0631 \u0645\u06cc\u0627\u0646 \u0631\u0648\u062a\u0631\u0647\u0627\u06cc \u0645\u062c\u0627\u0648\u0631 \u062f\u0631 \u0634\u0628\u06a9\u0647 \u062a\u0648\u0633\u0637 \u0634\u0627\u062e\u0635\u200c\u0647\u0627\u06cc\u06cc \u06a9\u0647 \u0627\u0632 \u067e\u06cc\u0634 \u062a\u0639\u06cc\u06cc\u0646 \u0634\u062f\u0647 \u0627\u0633\u062a (\u06a9\u0647 \u06af\u0627\u0647\u0627 \u0647\u0645 \u0645\u06cc \u062a\u0648\u0627\u0646\u0646\u062f \u0628\u0635\u0648\u0631\u062a \u0645\u0642\u062f\u0627\u0631 \u067e\u06cc\u0634 …<\/p>\n","protected":false},"author":1,"featured_media":2870,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[238,349],"tags":[],"class_list":["post-2855","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cisco","category-slides"],"yoast_head":"\n\u062a\u0634\u0631\u06cc\u062d \u062d\u0645\u0644\u0627\u062a \u067e\u0631\u0648\u062a\u06a9\u0644 OSPF - \u0628\u0644\u0627\u06af \u06af\u0631\u0648\u0647 \u0644\u06cc\u0627\u0646<\/title>\n<meta name=\"description\" content=\"\u062f\u0631\u0628\u0627\u0631\u0647 \u062d\u0645\u0644\u0627\u062a \u067e\u0631\u0648\u062a\u06a9\u0644 OSPF \u0686\u0647 \u0645\u06cc \u062f\u0627\u0646\u06cc\u062f\u061f \u0627\u06cc\u0646 \u062d\u0645\u0644\u0627\u062a \u0628\u0627 \u0686\u0647 \u0622\u0633\u06cc\u0628\u200c\u067e\u0630\u06cc\u0631\u06cc\u200c\u0647\u0627\u06cc\u06cc \u0631\u062e \u0645\u06cc\u200c\u062f\u0647\u062f\u061f \u062f\u0631 \u0627\u06cc\u0646 \u0645\u0642\u0627\u0644\u0647 \u0633\u0647 \u0633\u0646\u0627\u0631\u06cc\u0648 \u0627\u0632 \u0627\u06cc\u0646 \u062d\u0645\u0644\u0627\u062a \u0631\u0627 \u0628\u0631\u0631\u0633\u06cc \u0645\u06cc\u200c\u06a9\u0646\u06cc\u0645.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/liangroup.net\/blog\/ospf-protocol-attacks\/\" \/>\n<meta property=\"og:locale\" content=\"fa_IR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u062a\u0634\u0631\u06cc\u062d \u062d\u0645\u0644\u0627\u062a \u067e\u0631\u0648\u062a\u06a9\u0644 OSPF\" \/>\n<meta property=\"og:description\" content=\"\u062f\u0631\u0628\u0627\u0631\u0647 \u062d\u0645\u0644\u0627\u062a \u067e\u0631\u0648\u062a\u06a9\u0644 OSPF \u0686\u0647 \u0645\u06cc \u062f\u0627\u0646\u06cc\u062f\u061f \u0627\u06cc\u0646 \u062d\u0645\u0644\u0627\u062a \u0628\u0627 \u0686\u0647 \u0622\u0633\u06cc\u0628\u200c\u067e\u0630\u06cc\u0631\u06cc\u200c\u0647\u0627\u06cc\u06cc \u0631\u062e \u0645\u06cc\u200c\u062f\u0647\u062f\u061f \u062f\u0631 \u0627\u06cc\u0646 \u0645\u0642\u0627\u0644\u0647 \u0633\u0647 \u0633\u0646\u0627\u0631\u06cc\u0648 \u0627\u0632 \u0627\u06cc\u0646 \u062d\u0645\u0644\u0627\u062a \u0631\u0627 \u0628\u0631\u0631\u0633\u06cc \u0645\u06cc\u200c\u06a9\u0646\u06cc\u0645.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/liangroup.net\/blog\/ospf-protocol-attacks\/\" \/>\n<meta property=\"og:site_name\" content=\"\u0628\u0644\u0627\u06af \u06af\u0631\u0648\u0647 \u0644\u06cc\u0627\u0646\" \/>\n<meta property=\"article:author\" content=\"#\" \/>\n<meta property=\"article:published_time\" content=\"2020-07-06T12:07:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2022-01-12T14:52:02+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/liangroup.net\/blog\/wp-content\/uploads\/2020\/07\/9wDmip8_0ZXXOYizso4DAfrDCISwkXW-.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"800\" \/>\n\t<meta property=\"og:image:height\" content=\"500\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"\u0627\u062f\u0645\u06cc\u0646\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@#\" \/>\n<meta name=\"twitter:site\" content=\"@liansecurity\" \/>\n<meta name=\"twitter:label1\" content=\"\u0646\u0648\u0634\u062a\u0647\u200c\u0634\u062f\u0647 \u0628\u062f\u0633\u062a\" \/>\n\t<meta name=\"twitter:data1\" content=\"\u0627\u062f\u0645\u06cc\u0646\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u0632\u0645\u0627\u0646 \u062a\u0642\u0631\u06cc\u0628\u06cc \u0628\u0631\u0627\u06cc \u062e\u0648\u0627\u0646\u062f\u0646\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 \u062f\u0642\u06cc\u0642\u0647\" 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