Network Security

هجمات انتحال العناوين وتسميم الـ ARP وطرق الحماية باستخدام Dynamic ARP Inspection

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المحاور التقنية والتحليلية

آلية عمل ARP Spoofing

إرسال ردود ARP مزيفة لربط عنوان IP البوابة بعنوان MAC الخاص بالمهاجم، مما يقود حركة المرور عبره.

تفعيل DHCP Snooping

بناء جدول ربط موثوق بين عناوين IP و MAC والمنافذ الصالحة في الشبكة لمنع الخوادم غير المصرح بها.

تطبيق Dynamic ARP Inspection (DAI)

إلزام السويتش بالتحقق من صحة كافة حزم الـ ARP بالاعتماد على جدول DHCP Snooping وإسقاط المزيف منها.

⚠️ نصيحة مهندس الشبكات والأمان:

تطبيق مبادئ الدفاع في العمق (Defense in Depth) ومراجعة سجلات الاتصال بشكل دوري هما خط الدفاع الأول لاكتشاف محاولات الاختراق قبل تفاقمها.

📌 التوصيات العملية وأفضل الممارسات:

تفعيل الرقابة اللحظية على حركة البيانات المشبوهة واستخدام التنبيهات الآلية.
عزل الأجهزة الحرجة وتطبيق سياسات الوصول الأقل امتيازاً (Least Privilege).
التحديث المستمر للبرمجيات الثابتة (Firmware) وتطبيق الترقيعات الأمنية فور صدورها.

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Tags Network Security أمن الشبكات شروحات تقنية

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