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1	secured network infrastructure
2	graduation project
3	Submitted by:
4	
5	Mostafa Mohamed Mostafa
6	Mohamed Khaled Kamal
7	Mohamed abdelnasser Mohamed
8	Mohamed Samir abdelsalam
9	Abdelaziz hosny abdelmagid
10	
11	Under supervision
12	Dr. Eman Salah
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21	Acknowledgments
22	
23	Many people come to mind with gratitude to Go who Helped
24	us complete this project.
25	We would like to extend our sincere thanks to our supervisor,
26	
27	Dr.Eman Salah
28	
29	We are deeply indebted to him for his valuable oversight,
30	constant encouragement, valuable suggestions, and active
31	assistance during this work.
32	Our sincerest appreciation and gratitude to our parents for
33	their tremendous support and prepayment for us until this
34	moment. I cannot find a suitable word to express our deep
35	gratitude to our families who have given us such exceptional
36	support. This thesis is a dedication to their love.
37	
38	………………………
39	Finally, to everyone who has supported us, thank you.
40	
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42	
43	Contents
44	Acknowledgments ......................................................................................................................................................2
45	List of Figures ............................................................................................................................................................7
46	List of Table ...............................................................................................................................................................8
47	Abstract: .....................................................................................................................................................................9
48	Chapter 1...................................................................................................................................................................11
49	Our Locations ...........................................................................................................................................................11
50	Services Overview Troubleshooting .........................................................................................................................11
51	Cloud Backup ...........................................................................................................................................................12
52	Detailed Service Comparison....................................................................................................................................12
53	Case Studies and Success Stories..............................................................................................................................13
54	Case Study 1: Effective Troubleshooting for a Prominent Retail Network ...........................................................13
55	Case Study 2: A Financial Services Company's Dependable Cloud Backup ....................................................13
56	Chapter 2 ..................................................................................................................................................................14
57	A Brief History of Network Technology ...................................................................................................................14
58	The Fundamentals of Networks: ...............................................................................................................................17
59	Local Area Network: .............................................................................................................................................17
60	What is a wide area network (WAN)?...............................................................................................................20
61	LAN vs. WAN ..........................................................................................................................................................21
62	Basic network components:.......................................................................................................................................23
63	Types of routers: .......................................................................................................................................................24
64	OSI Model ................................................................................................................................................................28
65	Network Topology ....................................................................................................................................................31
66	Point to Point-to-Point topology ...........................................................................................................................31
67	Mesh Topology .................................................................................................................................................32
68	Star Topology ...................................................................................................................................................32
69	Bus Topology ...................................................................................................................................................33
70	Ring Topology ..................................................................................................................................................33
71	Tree Topology ...................................................................................................................................................34
72	Hybrid Topology ..............................................................................................................................................35
73	Chapter 3 ..................................................................................................................................................................39
74	Introduction to Firewalls ...........................................................................................................................................39
75	Definition and Purpose..........................................................................................................................................39
76	Historical Background ..........................................................................................................................................39
77	Packet Filtering Firewalls .........................................................................................................................................40
78	How Packet Filtering Works .................................................................................................................................40
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82	Types of Packet Filtering...........................................................................................................................................41
83	Advantages and Limitations: .....................................................................................................................................43
84	Stateful Inspection Firewalls .....................................................................................................................................44
85	Key Features and Functionality: ...........................................................................................................................44
86	Comparison with Packet Filtering Firewalls: ............................................................................................................45
87	Proxy Firewalls .........................................................................................................................................................46
88	Overview and Operation: ......................................................................................................................................46
89	Benefits and Drawbacks:...................................................................................................................................47
90	Next-Generation Firewalls (NGFWs) ......................................................................................................................48
91	Evolution and Features: .........................................................................................................................................48
92	Integration with Advanced Security Technologies: ...................................................................................................49
93	Introduction to Network Security..............................................................................................................................51
94	Definition and Scope of Network Security: ..........................................................................................................51
95	Common Threats and Vulnerabilities:...................................................................................................................52
96	Network Security Measures. .....................................................................................................................................53
97	Intrusion Detection Systems (IDS): .......................................................................................................................53
98	Intrusion Prevention Systems (IPS)...................................................................................................................54
99	Virtual Private Networks (VPNs):.....................................................................................................................55
100	Types of VPNs: .........................................................................................................................................................58
101	Access Control Lists (ACLs): ...................................................................................................................................61
102	Types of Access Control Lists. .............................................................................................................................62
103	Overview of Router Connections and Server Configurations ...................................................................................62
104	Difference Between Access Point, Station, Bridge, and Router. ..............................................................................62
105	Types of Router Connections ....................................................................................................................................65
106	Server Configurations ...............................................................................................................................................66
107	Active-Active Configuration ................................................................................................................................66
108	Active-Passive Configuration ...........................................................................................................................67
109	Practical Applications ...............................................................................................................................................68
110	How to Implement Active-Active and Active-Passive Configurations .................................................................68
111	Chapter4....................................................................................................................................................................69
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