OSI Layer 2: Data Link Layer

Adresse IP de réseau
Pour raccorder un réseau à un réseau IP (internet, intranet), il faut choisir une adresse IP de réseau pour ce
nouveau réseau, non encore attribuée. Concernant Internet, les adresses de réseaux sont attribuées par des organismes
ou sociétés officiels. Généralement, on peut en obtenir auprès d’un FAI.
La taille du résea…Read More

EXERCICE 1 (ADRESSAGE IP)
Les adresses IP font partie intégrante de IP. Elles ont pour but de se substituer aux adresses physiques (MAC)
des réseaux, qui sont différentes d’un réseau à l’autre. À partir de la couche IP, il n’est plus question que d’adresses
IP pour désigner les équipements (ordinateurs, routeurs, hubs, etc.) d’un internet.…Read More

Comparing Linux and Windows
1. Cost and Licensing
Windows: A paid operating system that requires a license for each device, making it costlier for individuals and businesses.
Linux: Free and open-source, available to download and use at no cost, with the freedom to modify its source code.
2. Stability and Performance
Windows: Despite regular…Read More

🎄🎁🤖 As retail traffic surges this holiday season, AI-driven threats are expected to spike.

Discover how “Grinch bots” are impacting the retail industry and strategies to enhance bot detection for a seamless holiday shopping experience.

https://thehackernews.com/2024/11/cyber-threats-that-could-impact-retail.html

#infosec

German law enforcement has disrupted the criminal service dstat[.]cc, enabling easy DDoS attacks for non-technical users.

Find details here: https://thehackernews.com/2024/11/german-police-disrupt-ddos-for-hire.html

#infosec #cybersecurity

German Police Disrupt DDoS-for-Hire Platform dstat[.]cc; Suspects Arrested

German authorities disrupt dstat[.]cc, a DDoS-for-hire platform; two suspects arrested amid crackdown.

thehackernews.com

//Ssh port forgotten in the ufw firwall
lsblk
sudo mount /dev/sdd2 /mnt
sudo nano /mnt/etc/ufw/user.rules
//Add the firwall isntruction to allow the 22 port
sudo umount /mnt

#ssh #security #linux #debian #ubuntu #ufw #firewall

Vous voulez en savoir plus sur les opportunités d’échanges et de coopération Erasmus+ qui sont ouvertes aux organisations et aux individus à travers le monde ? Le webinaire mondial est votre chance !
C’est l’occasion parfaite pour les organisations de mieux comprendre tous les aspects et les avantages des différentes actions et d’obtenir des cons…Read More

Your gateway to the EU, News, Highlights | European Union

Discover how the EU functions, its principles, priorities; find out about its history and member states; learn about its legal basis and your EU rights.

europa.eu

🐉Kali NetHunter AIO

📝Kali NetHunter is a mobile penetration testing platform for Android devices, developed by the Kali Linux team. It transforms an ordinary Android device into a powerful tool for network security testing, providing users with a comprehensive suite of tools and capabilities to conduct penetration tests, security assessments,…Read More

Differences Between Offensive and Defensive Security

Credit Cyber Edition

Chaque périphérique hôte possède deux adresses principales :

L’adresse physique (adresse MAC)

L’adresse logique (adresse IP)
L’adresse MAC et l’adresse IP fonctionnent ensemble pour identifier un périphérique sur le réseau. L’utilisation de l’adresse MAC et de l’adresse IP pour localiser un ordinateur revient à utiliser le nom et l’adres…Read More

What is the Internet Control Message Protocol (hashtag #ICMP)?

The Internet Control Message Protocol (ICMP) is a network layer protocol used by network devices to diagnose network communication issues. ICMP is mainly used to determine whether or not data is reaching its intended destination in a timely manner. Commonly, the ICMP protocol is…Read More

Le VTP (VLAN Trunking Protocol) simplifie la gestion des VLANs dans votre réseau.

🔍 Qu’est-ce que le VTP ?
VTP permet de propager les informations de VLAN automatiquement à travers tous les commutateurs du domaine VTP, facilitant ainsi la gestion centralisée.

✅ Pourquoi utiliser le VTP ?
– Centralisation : Gère les VLANs depuis un seul poi…Read More

🔎 L’ARP (Address Resolution Protocol) est un protocole qui fait le lien entre les adresses IP (couche réseau) et les adresses MAC (couche liaison) des appareils sur un réseau. Il permet la communication entre les couches 2 et 3 du modèle OSI.

📩 Messages ARP
– Requête ARP : demande l’adresse MAC associée à une adresse IP.
– Réponse ARP…Read More

Le STP (Spanning Tree Protocol) est essentiel pour prévenir les boucles dans les réseaux commutés.

📚 Définition:
STP est un protocole de couche 2 qui empêche les boucles de commutation en créant un chemin unique entre deux points du réseau.

🔄 Types de STP:
1. STP Original (802.1D): Version initiale, convergence lente
2. RSTP (802.1…Read More

Cette plateforme offre gratuitement plusieurs examens pratiques en cybersécurité.

Voici 13 certifications #cyber que vous pouvez préparer gratuitement sur CertPreps :

🎓 Certified in Cybersecurity (ISC2) : 500 questions pour se préparer à la certification CC.
– Difficulté : 🟢
– https://certpreps.com/cc/

🎓 CISSP (ISC2) : 10 examens prati…Read More

Google partners with GASA and DNS RF to launch the Global Signal Exchange (GSE), providing real-time insights into scam patterns to protect businesses from cybercrime.

Read: https://thehackernews.com/2024/10/google-joins-forces-with-gasa-and-dns.html

#cybersecurity #technews

🔴🔴 We’re hiring! The British Embassy Algiers has a vacancy for a Political & Communications Officer. Find out more and apply before 20 Oct: https://fco.tal.net/…/23564-DZA-Political-and…/en-GB
Copied
Enseignement Supérieur-Higher Education

🔴🔴 إعلان يخص برنامج ERASMUS خاص بفترة فصل الربيع لسنة2025 وذلك في إطار شراكة بين جامعة فرنسا (Cote d’azur) و جامعة تلمسان .
المعنيين بهذا البرنامج هم طلبة الدكتوراه المسجلين في مجال علوم التربية (Science de l’education).
للمزيد من المعلومات ومعرفة شروط الترشح الرجاء الولوج للرابط التالي:
vrex.univ-tlemcen.dz
أخر أجل للتسجيل : 21 أكتوبر2…Read More

🔴🔴 BREAKING NEWS
The Nobel Assembly at the Karolinska Institutet has today decided to award the 2024 Nobel Prize in Physiology or Medicine to Victor Ambros and Gary Ruvkun for the discovery of microRNA and its role in post-transcriptional gene regulation.
This year’s Nobel Prize honours two scientists for their discovery of a fundamental p…Read More

The Nobel Prize in Physiology or Medicine 2024

The Nobel Prize in Physiology or Medicine 2024 was awarded jointly to Victor Ambros and Gary Ruvkun "for the discovery of microRNA and its role in post-transcriptional gene regulation"

bit.ly

🔴🔴 📢. إطلاق برنامج المنح الدراسية لمنطقة الشرق الأوسط وشمال أفريقيا

تعلن وزارة التعليم العالي والبحث العلمي عن فتح “برنامج المنح الدراسية لمنطقة الشرق الأوسط وشمال أفريقيا (MSP)”، من معهد المياه IHE Delft (مقرها في هولندا)، الشريك الفني لمشروع التعاون بين دولتنا وهذه الوكالة التابعة للأمم المتحدة بعنوان: “GCP/INT/29/NET-WaPO”

يس…Read More

🔴🔴 🔸🔸منح تكوينــية 🔸🔸
تلقت وزارة التعليم العالي والبحث العلمي عرضًا لمنح بعنوان “برنامج منح تكوينية لمنطقة الشرق الأوسط وشمال أفريقيا (MSP)”، مقدمة من معهد المياه IHE Delft (المقر في هولندا)، الشريك التقني لمشروع التعاون بين بلدنا وهذه الوكالة الأممية، الذي يحمل عنوان ” GCP/INT/29/NET-WaPOR phase II ”
هذا البرنامج موجه إلى المهنيين الشباب…Read More

Homepage | Study in NL

Your official starting point to studying in the Netherlands

www.studyinnl.org

🔴 التسجيلات المفتوحة حاليا :
🟢 تسجيلات مسابقات التربية(مشرفي التربية، مقتصد، نائب مقتصد ….) – آخر أجل 13 أكتوبر 2024
🟢 تسجيلات القرعة العشـوائية الأمـريكية – آخر أجل 05 نوفمبر 2024
🟢 تسجيلات التوظيف لإدارة السجـ.ـون -آخر أجل 20 أكتوبر
🟢 تسجيلات الحج – آخر أجل 27 أكتوبر 2024
🟢 تسجيلات التحضيري -آخر أجل 09 أكتوبر
&#x1f7…Read More

Hack DHCP and run MITM using Python and Kali Linux (And capture passwords)
This video is part of my FREE CCNA 200-301 v1.1 Course (2024 updates)
YouTube video:

#ccna #dhcp #network #ccnp #cybersecurity #hack #hacker #hacking #infosec #router #switch #hub #ethernet #starlink #cisco #networking #cert…Read More

Never access the Dark Web without doing this!
Tor and Telegram demos with one of the best hackers in the world.
YouTube vidoe:

#tor #telegram #darknet #darkweb #crypto #Anonymous #vpn #safe #ransomware #cybersecurity #cyber #infosec #informationsecurity #internet #hack #hacking #hacker

Apple has released critical iOS and iPadOS updates addressing a #vulnerability (CVE-2024-44204) that could expose your passwords via VoiceOver #technology.
Read: https://thehackernews.com/…/apple-releases-critical-ios…
#iPhone XS and later, plus iPads from the Pro, Air, and Mini series, are impacted.
#infosec

The Hacker News | #1 Trusted Cybersecurity News Site

The Hacker News is the most trusted and popular cybersecurity publication for information security professionals seeking breaking news, actionable insights and analysis.

thehackernews.com

Continuous Threat Exposure Management (CTEM) enables continuous protection by helping you prioritize threats with real-time data.
🔗Learn how CTEM fits into your cybersecurity framework: https://thehackernews.com/…/how-to-get-going-with-ctem…
#infosec

Google is enhancing #Android 14 security on Pixel devices to prevent 2G attacks and protect against baseband exploits. Baseband vulnerabilities expose devices to remote attacks, potentially compromising sensitive data.
Read: https://thehackernews.com/…/android-14-adds-new…
#cybersecurity #technews

The Hacker News | #1 Trusted Cybersecurity News Site

The Hacker News is the most trusted and popular cybersecurity publication for information security professionals seeking breaking news, actionable insights and analysis.

thehackernews.com

A major #vulnerability (CVE-2024-47374) in the LiteSpeed Cache WordPress plugin could allow attackers to execute arbitrary #JavaScript and hijack accounts.
Find details here: https://thehackernews.com/…/wordpress-litespeed-cache…
Patch now to protect your site.
#cybersecurity

The largest-ever DDoS attack just occurred—3.8 Tbps in just 65 seconds!
Is your CPU capacity prepared to filter massive attack traffic? Attackers leveraged compromised ASUS routers, a serious reminder to address CVE-2024-3080 now.
Read: https://thehackernews.com/…/cloudflare-thwarts-largest…
#cybersecurity

The Hacker News | #1 Trusted Cybersecurity News Site

The Hacker News is the most trusted and popular cybersecurity publication for information security professionals seeking breaking news, actionable insights and analysis.

thehackernews.com

The U.S. Department of Justice and #Microsoft have seized 107 domains used by Russia-linked COLDRIVER hackers to launch phishing attacks, frequently targeting experts in Russian affairs, #privacy advocates, and intelligence officials.
Read: https://thehackernews.com/…/us-and-microsoft-seize-107…
#infosec

The Hacker News | #1 Trusted Cybersecurity News Site

The Hacker News is the most trusted and popular cybersecurity publication for information security professionals seeking breaking news, actionable insights and analysis.

thehackernews.com