IP Features on Cisco Routers ***English Subtitles***

Learn about IP feautres and how they work, their disadvantages, security issues and attacks related to them.

4.50 (22 reviews)
Udemy
platform
العربية
language
IT Certification
category
2,469
students
2 hours
content
Jun 2023
last update
$19.99
regular price

What you will learn

Understand IP features and how they work.

Clarify some unusual behavior of networks.

What are IP features disadvantages.

Security Issues related to IP features

How to mitigate Attacks related to IP features.

The Proxy ARP feature.

The ICMP Redirects feature

The IP Directed Broadcasts feature.

A lecture about the bestselling book “About the book of Sandworm: A New Era of Cyberwar”.

Description

  • This course will help you understand some behaviors that seems strange or unusual in networking such as hosts that do not use default gateway to communicate with other subnets. You will understand how such things happen.

  • You will understand the mechanisms of some of important IP features such as Proxy ARP, IP redirects, IP directed Broadcasts.

  • You will understand the disadvantages and security issues related to these features, the attacks that they allow, and how to mitigate them.

  • This course is focusing on the practical side as much as possible using cisco routers emulated in GNS3.

For example, we will see how the Proxy ARP feature allows hosts that do not use default gateway to communicate with other subnets, or to use a default gateway that it is located outside it is own subnet. We see how this feature affects the cache of the devices, and therefore will understand what is the best way to configure static routing. Additionally, you will see how both DOS (denial of service) and MiTM (Man in the middle) attacks take advantage of the Proxy ARP feature. However, this feature was not there without a reason, so its usage cases will be explained.

Another example is how the IP directed Broadcasts feature allows for the IP Smurfing attack to occur, and how we can mitigate this attack using the uRPF (unicast Reverse Path Forwarding) mechanism.

Finally, as a bonus, and since we have talked about some network attacks in this course, I have added a lecture about the bestselling book “Sandworm: A New Era of Cyberwar”.


ستساعدك هذه الدورة التدريبية على فهم بعض السلوكيات التي تبدو غريبة أو غير عادية في الشبكات مثل المضيفين الذين لا يستخدمون العبّارة الافتراضية للتواصل مع الشبكات الفرعية الأخرى. سوف تفهم كيف تحدث مثل هذه الأشياء.

ستفهم آليات بعض ميزات IP الهامة مثل Proxy ARP ، وإعادة توجيه IP ، وعمليات البث الموجهة عبر IP.

ستفهم العيوب وقضايا الأمان المتعلقة بهذه الميزات والهجمات التي تسمح بها وكيفية التخفيف منها.

تركز هذه الدورة على الجانب العملي قدر الإمكان باستخدام موجهات سيسكو التي تمت محاكاتها في GNS3.


على سبيل المثال ، سنرى كيف تسمح ميزة Proxy ARP للمضيفين الذين لا يستخدمون العبّارة الافتراضية بالتواصل مع الشبكات الفرعية الأخرى ، أو لاستخدام عبّارة افتراضية تقع خارج الشبكة الفرعية الخاصة بها. نرى كيف تؤثر هذه الميزة على ذاكرة التخزين المؤقت للأجهزة ، وبالتالي سوف نفهم أفضل طريقة لتكوين التوجيه الثابت. بالإضافة إلى ذلك ، سترى كيف تستفيد هجمات كل من DOS (رفض الخدمة) وهجمات MiTM (الرجل في الوسط) من ميزة Proxy ARP. ومع ذلك ، لم تكن هذه الميزة موجودة بدون سبب ، لذلك سيتم شرح حالات استخدامها.

مثال آخر هو كيف تسمح ميزة البث المباشر عبر IP بحدوث هجوم IP Smurfing ، وكيف يمكننا التخفيف من هذا الهجوم باستخدام آلية uRPF (إعادة توجيه المسار العكسي الأحادي).

أخيرًا ، كمكافأة ، وبما أننا تحدثنا عن بعض هجمات الشبكات في هذه الدورة ، فقد أضفت محاضرة حول الكتاب الأكثر مبيعًا "Sandworm: A New Era of Cyberwar".

Content

Course Introduction

Introduction

Proxy ARP

Hosts Withotut A Default Gateway
Proxy ARP Explained
Hosts With a Default Gateway Outside the Subnet
The Necessity of Routing
Disadvantges on Hosts
The ARP Cache When Using a Default Gateway
Disadvantages on Routers & The Best Way to Configure Static Routing
DoS & MiTM Attacks using Proxy ARP
Proxy ARP Usage Cases
Proxy ARP Summary

ICMP Redirects

ICMP Redirects Explained
ICMP Redirects Disadvantges 1
ICMP Redirects Disadvantges 2 (The ICMP Redirects Attack)
ICMP Redirects Summary

IP Directed Broadcasts

IP Directed Broadcasts Explained
The IP Smurfing Attack
Mitigating the IP Smurfing Attack with uRPF
IP Directed Broadcast Summary

Bonus Lecture: More courses - Lowest Price

Bonus Lecture: More courses - Lowest Price

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846954
udemy ID
5/12/2016
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11/22/2019
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