Network Security

فهم نموذج OSI ونموذج TCP IP من منظور أمني واكتشاف الثغرات في كل طبقة

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المحاور التقنية والتحليلية

الطبقة الفيزيائية وطبقة ربط البيانات

مخاطر التنصت السلكي، هجمات MAC Flooding، واختطاف منافذ السويتش.

طبقة الشبكة والنقل

هجمات IP Spoofing، هجمات حزم SYN Flood، والتلاعب بمسارات التوجيه عبر BGP.

طبقة التطبيقات

هجمات مستوى التطبيق مثل DNS Cache Poisoning وتزييف شهادات SSL/TLS.

⚠️ 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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