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Questions and Answers
Тармoq хавфсизлиги тизимларига киритиш учун энг муҳим қoidalардан бири қандай?
Ҳимоя тизимлари тармоқларни қандай хавфсизлик таъминлаштиришга йўл қўяди?
Тармоқ хавфсизлиги учун қандай протоколлардан фойдаланилади?
Тармоқ хавфсизлиги учун энг муҳим қoidalардан бири қандай?
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Тармоқларни сегментлаштириш орқали қандай ҳимоя қилинади?
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Study Notes
Network Security
Types of Network Security Threats:
- Malware: malicious software designed to harm or exploit a network, e.g., viruses, worms, Trojan horses
- Phishing: social engineering attacks to trick users into revealing sensitive information
- Ransomware: malware that encrypts data and demands payment in exchange for decryption
- Denial of Service (DoS) and Distributed Denial of Service (DDoS): attacks that overwhelm a network with traffic, making it unavailable to users
Network Security Measures:
- Firewalls: hardware or software barriers that block unauthorized access to a network
- Virtual Private Networks (VPNs): encrypted connections that secure data transmission over the internet
- Intrusion Detection Systems (IDS) and Intrusion Prevention Systems (IPS): systems that detect and prevent unauthorized access to a network
- Encryption: encrypting data to prevent unauthorized access or interception
- Access Control: limiting access to a network based on user identity, role, or location
Network Segmentation:
- VLANs (Virtual Local Area Networks): dividing a network into smaller, isolated segments
- Subnetting: dividing a network into smaller, isolated segments using IP addresses
- Network segmentation: dividing a network into smaller, isolated segments to limit the attack surface
Network Security Protocols:
- SSL/TLS (Secure Sockets Layer/Transport Layer Security): protocols for encrypting data transmission over the internet
- HTTPS (Hypertext Transfer Protocol Secure): a secure version of HTTP that uses SSL/TLS
- SSH (Secure Shell): a secure protocol for remote access to a network
Best Practices:
- Regularly update and patch software and systems
- Use strong passwords and authentication
- Implement a incident response plan
- Conduct regular security audits and vulnerability assessments
- Educate users about network security best practices
Tarmoq Xavfsizligi
Tarmoq Xavfsizligiga Qarshi Tahdidlar
- Malware: tarmoqqa zarar yetkazish yoki unga tajovuz qilish uchun mo'ljallangan yovuz dastur, masalan, viruslar, wormlar, Trojan otlar
- Phishing: foydalanuvchilarni maxfiy ma'lumotlarni ochirishga undash uchun ijtimoiy muhandislik hujumlari
- Ransomware: ma'lumotlarni shifrlash va ochirish uchun to'lov talab qiladigan malware
- Denial of Service (DoS) va Distributed Denial of Service (DDoS): tarmoqqa foydalanuvchilarga mavjud bo'lmagani sabab qilib, ularga ketma-ket trafik yuborish orqali hujumlar
Tarmoq Xavfsizligi Choralari
- Olov devori: tarmoqqa noqonuniy kirishni to'xtatuvchi qurilma yoki dastur
- Virtual Private Network (VPN): internet orqali ma'lumotlarni yuborishni shifrlash uchun maxsus ulanish
- Intrusion Detection Systems (IDS) va Intrusion Prevention Systems (IPS): tarmoqqa noqonuniy kirishni aniqlash va oldini olish sistemas
- Shifrlash: ma'lumotlarni noqonuniy kirish yoki quloqlashdan himoya qilish uchun shifrlash
- Ruxsat nazorati: foydalanuvchilarga tarmoqqa kirish huquqlarini cheklash uchun ro'yxatdan o'tkazish
Tarmoq Bo'linishi
- VLAN (Virtual Local Area Network): tarmoqni kichik, izolyatsiya qilingan segmentlarga bo'lish
- Subnetting: tarmoqni kichik, izolyatsiya qilingan segmentlarga bo'lish uchun IP manzillaridan foydalanish
- Tarmoq bo'linishi: tarmoqni kichik, izolyatsiya qilingan segmentlarga bo'lish uchun hujum yuzasini cheklash
Tarmoq Xavfsizligi Protokollari
- SSL/TLS (Secure Sockets Layer/Transport Layer Security): internet orqali ma'lumotlarni shifrlash uchun protokollar
- HTTPS (Hypertext Transfer Protocol Secure): HTTP protokolining xavfsiz versiyasi, SSL/TLSdan foydalanadi
- SSH (Secure Shell): tarmoqqa uzoqdan kirish uchun xavfsiz protokol
Eng Yaxshi Amaliyotlar
- Dasturlar va tizimlarni muntazam yangilash va tuzatish
- Kuchli parollar va autentifikatsiyadan foydalanish
- Voqealar uchun javob reaksiyasini amalga oshirish
- Muntazam xavfsizlik tekshiruvi va zaifliklarni tekshirish
- Foydalanuvchilarga tarmoq xavfsizligi haqida ma'lumotlar berish
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Description
O'quv qiziqlari turlari: zararli dasturlar, firibgarlik hujumlari, ransomvare, DoS va DDoSga qarshi kurash choralari