یکی از مباحث مهم در حوزه‌ی فناوری امنیت شبکه است. 

شبکه به تعدادی از کامپیوترهای متصل شده به هم گفته می‌شود. هر شبکه با توجه به نوع شبکه بندی خود سطوح دسترسی متفاوتی دارد که افراد با هر سطحی از دسترسی می‌توانند در آن شبکه الاعاتی را دریافت و یا ارسال کنند. 

یک شبکه کامپیوتری از دو بخش سخت افزار و نرم افزار تشکیل شده است که تامین امنیت در حوزه‌ی نرم افزاری امری بسیار مهم و تخصصی است. اهمیت امنیت شبکهدر هر شبکه اطلاعات ارسالی و دریافتی برای هر شرکت یا سازمان مهم هست. محافظت از این داده ها در بستر شبکه ابتدا نیاز به وجود امنیت کل شبکه دارد.  

امنیت شبکه به این معنی است که افراد خارج از سازمان نتوانند به پیکربندی شبکه راه یابند. 

انواع تهدیدات شبکه 

- حملات DDOS

- ویروس‌ها

- کرم ها

 - تروجان ها 

- دسترسی های غیر مجاز

- نرم افزارهای تخریبی

- حملات تخریب اطلاعات

- حملات MITM

معرفی وب سایت در زمینه آموزش آنلاین امنیت شبکه 

حال که با امنیت شبکه آشنا شدید و می‌خواهید پا به این عرصه بگذارید وبسایتی را به شما معرفی خواهم کرد که می‌تواند کمک بسیار مفیدی در رشد آن تخصص شما داشته باشد. 

وب سایت تهران ترین به آدرس https://tehrantrain.com/ از سال ۱۳۹۷ فعالیت خود را شروع کرده است و دوره های مختلفی مانند دوره نتورک پلاس، دوره سیکوریتی پلاس و سیسکو را برگزار می‌کند. 

این وب سایت توسط امیر و خیال خورشیدی راه اندازی شده است و اگر آشنایی با این افراد ندارید می‌تواند با جستجو در گوگل اطلاعات و رزومه کاری آنها را مشاهده کنید. 

در این وب سایت یا به عبارت بهتر باشگاه علاوه بر دوره های آنلاین دوره های رایگان مانند نتورک پلاس، لینوکس مقدماتی هم وجود دارد. 

خدمات و فعالیت های باشگاه

۱ – تولید ویدیوهای آموزشی با کیفیت به صورت رایگان برای همه کاربران وب سایت

۲ – ارائه تمرین برای ویدیو های آموزشی و برگزاری جلسه های آنلاین  حل تمرین از طریق سرویسهای اینترنتی مثل اسکایپ

۳ – برگزاری دوره های آموزشی شبکه به صورت ویدیویی، همراه با پشتیبانی آنلاین و نامحدود از طریق تلگرام،واتساپ و اسکایپ

۴ – ارائه مشاوره آموزشی و شغلی به دو روش رایگان ( ویدیو های از قبل تولید شده در وب سایت ) و غیر رایگان      ( تلفنی، اینترنتی و حضوری )

۵ – ارائه بورس آموزشی به بهترین اعضای باشگاه که از طریق آزمون آنلاین و مصاحبه فنی انتخاب می شوند

۶ – برگزاری دوره های مرتبط با بازار کار شبکه و امنیت:دوره مدیریت زمان –  انگلیسی برای متخصص شبکه –  دوره مدرس بین المللی

In simple terms, network security is known as a set of measures to protect computer networks against internal and external attacks. In fact, network security involves the process of preventing hardware and software precautions to protect network resources against unauthorized access by unauthorized persons who are attempting to steal or destroy information. These actions originate from the outer layers of the network to the layers The interior continues. Each security layer has specific control policies to manage the permissions of authorized users and prevent hackers from penetrating network information.

The accredited SANS system completes the definition of network security:

Network security is the process of preventative physical and software prevention to prevent unauthorized access, abuse, malfunction, modification, destruction or disclosure of network infrastructure, thus creating a secure platform for computers, users and applications in an environment. Secure on network security.

Today, with the expansion of the use of information technology business, one of the main concerns of network security is the fact that the existence of a security flaw in the network can cause serious and irreparable damage to companies and organizations.

Security of information from past to now As the computer systems entered the departments and organizations, and the need to use computer networks, attacks on security organizations also began. Old systems of security and technology New attacks are the challenges faced by organizations and organizations. Today, information (data) is one of the most important assets of an organization. In the past, the protection of information and data was much easier. All information and data were physically and collectively handwritten and written in boxes, and individuals as guardians were physically protecting this information. In this way, the security of data and information was provided in the past. It can be said that from the same time it has been theft of data. Now that the world of data and data has been changed from analog to digital, the way of theft and in general have changed the types of threats.

Principles of Network Security The above are the definitions of network security. But how can you plan to run network security? The general strategy in this case consists of three steps. In fact, network security includes:

Protection: We need to properly configure our systems and network. Detection: We must monitor the network completely and identify the changes and use of network resources that are signs of infiltration. Response: After identifying problems, you should quickly respond to them and quickly provide a secure environment on your network.

Argumen Network Security benar-benar mutlak dikarenakan :

1. Privasi/Confidentiality

a. Defenisi : merawat info dari orang yang tdk punya hak membuka. b. Privasi : lebih kearah data-data yang sifatnya privat, Contoh : e-mail seseorang pengguna (user) tdk bisa di baca oleh administrator. c. Confidentiality : terjalin dengan data yang didapatkan ke pihak lain buat kebutuhan spesifik serta cuma diijinkan buat kebutuhan spesifik itu. d. Contoh : data-data yang sifatnya pribadi (seperti nama, tempat tanggal lahir, social security number, agama, status perkawinan, penyakit yang pernah terkena, nomer kartu credit, dan lain-lain) mesti sanggup diproteksi dalam pemanfaatan serta penyebarannya. e. Bentuk Serangan : usaha penyadapan (dengan program sniffer). f. Usaha-usaha yang sanggup dijalankan buat menaikkan privasi serta confidentiality yaitu dengan memanfaatkan technologi kriptografi.

2. Integrity

a. Defenisi : info tdk bisa dirubah tanpa ada seijin yang miliki info. b. Contoh : e-mail di intercept di dalam jalan, dirubah berisi, selanjutnya diteruskan ke alamat yang dituju. c. Bentuk serangan : Ada virus, trojan horse, atau pengguna lain yang membuat perubahan info tanpa ada ijin, “man in the middle attack” di mana seorang tempatkan diri di dalam percakapan serta menyamar sebagai orang lain . 3. Authentication

a. Defenisi : metoda buat menjelaskan bahwa info nyata-nyata asli, atau orang yang membuka atau memberikannya info merupakan nyata-nyata orang yang disebut. b. Support : · Ada Tools memperlihatkan keaslian dokumen, sanggup dijalankan dengan technologi watermarking (buat merawat “intellectual property”, yakni dengan menandai dokumen atau hasil karya dengan “tanda tangan” pembuat) serta digital signature. · Access control, yakni bersangkutan dengan pembatasan orang yang sanggup membuka info. User mesti memanfaatkan password, biometric (beberapa ciri khas orang), serta sejenisnya.

4. Availability

a. Defenisi : terjalin dengan tersedianya info waktu diperlukan. b. Contoh rintangan : · “denial of service attack” (DoS attack), di mana server dikirimi permohonan (rata-rata palsu) yang bertubi-tubi atau permohonan yang di luar perkiraan jadi tdk sanggup melayani permohonan lain atau bahkan juga hingga down, hang, crash. · mailbomb, di mana seseorang pengguna dikirimi e-mail bertubi-tubi (katakan beberapa ribu e-mail) dengan ukuran yang besar jadi sang pengguna tdk sanggup buka e-mailnya atau susah membuka e-mailnya.

5. Access Control

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Network security is the term used to secure both the private and public computer weft. Any business related to the IT network suchness need to prove true a strong respect and security crossing-out to proffer aid their data from hackers. Every business requires a secure fret with molding to keep the the data safe. <\p>

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6) Accurate computer language can be protected in keeping with enhancing the security level.<\p>