#معرفی_سایت

♻️ با استفاده از سایت های زیر میتونید بدون فیلترشکن یوتیوب تماشا کنید

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💢قابلیت دانلود کلیپ ها
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yewtu.be/ 🇳🇱
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inv.vern.cc/ 🇺🇸


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📚 کتاب:
Modern Cybersecurity Strategies for Enterprises: Protect and Secure Your Enterprise Networks, Digital Business Assets, and Endpoint Security with Tested and Proven Methods

👤 نویسنده: Ashish Mishra


کتابی مهندسی و کاربردی برای کارشناسان، حاصل تجربیات 18 ساله یک مهندس در صنعت، حاوی مفاهیم امنیت، تهدیدها و ابزارها در یک سازمان، تیم پاسخ دهی به رخدادها

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دامنه com. را به ir. تغییر دهید

‏❗️شاپرک در نامه‌ای به شرکت‌های پرداخت‌یار اعلام کرد با توجه به احتمال مسدود شدن دامنه‌های دات کام، پرداخت‌یارها تا ۳ دی فرصت دارند سایت خود را به دامنه ir کنند.

میلاد جهاندار، مدیرعامل پرداخت‌یار باهمتا و دبیر سابق انجمن فین‌تک در همین رابطه گفت: «رسیدن به مرحله‌ای که رگولاتوری حتی در انتخاب نام دامنه هم دخالت کند درجه‌ای از رگولاتوری است که در هیچ کشوری اجرا نمی‌شود! ما به عنوان پرداخت‌یار ترجیح می دهیم با این تصمیم همراه نشویم. چنین موضوعی صرفا روی پرداخت‌یارها اثر ندارد و در نهایت همه کسب‌وکارهای فناوری را درگیر خواهد کرد.»

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📚 کتاب:
API Security in Action teaches you how to create secure APIs for any situation.

👤 نویسنده: Neil Madden


کتاب Api Security In Action به شما می آموزد که چگونه API های امن برای هر موقعیتی ایجاد کنید.

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چت‌بات مبتنی بر هوش مصنوعی ChatGPT چیست؟
یک نمونه اولیه از چت‌بات دیالوگ محور مبتنی بر هوش مصنوعی است که می‌تواند زبان طبیعی انسان را متوجه شود و متون نوشتاری بسیار دقیقی مشابه انسان تولید کند. در‌حقیقت ChatGPT جدیدترین نسخه از GPT، خانواده‌ای از هوش مصنوعی با قابلیت تولید متن به‌حساب می‌آید.

چگونه کار می‌کند؟
این چت‌بات که با هوش مصنوعی و یادگیری ماشینی توسعه پیدا کرده است، از طریق یک رابط کاربری گفتگو‌محور، به سؤالات پاسخ داده و اطلاعات در اختیار کاربران قرار می‌دهد. این ابزار از طریق یک نمونه عظیم از اطلاعات اینترنت آموزش داده شده است.

به گفته OpenAI، این ابزار با تمرکز روی سادگی در استفاده توسعه پیدا کرده است: «قالب گفتگومحور، این قابلیت را به ChatGPT داده تا بتواند به سؤالات بعدی کاربران هم جواب دهد، اشتباهات خود را بپذیرد و به چالش بکشد و همچنین درخواست‌های نامناسب را رد کند.»

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🔶What are the types of firewalls?

Based on their method of operation, there are four different types of firewalls:
🔸Packet Filtering Firewalls: Packet filtering firewalls are the oldest, most basic type of firewalls.
🔸Circuit-Level Gateways.
🔸Stateful Inspection Firewalls.
🔸Application-Level Gateways (Proxy Firewalls)

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🔶Stateful vs. Stateless Firewalls: What's the Difference?

Stateful firewalls are capable of monitoring and detecting states of all traffic on a network to track and defend based on traffic patterns and flows. Stateless firewalls, however, only focus on individual packets, using preset rules to filter traffic.

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🔶Difference between Firewall and Intrusion Detection System

A firewall is a hardware and/or software which functions in a networked environment to block unauthorized access while permitting authorized communications. Firewall is a device and/or a software that stands between a local network and the Internet, and filters traffic that might be harmful.

An Intrusion Detection System (IDS) is a software or hardware device installed on the network (NIDS) or host (HIDS) to detect and report intrusion attempts to the network.

We can think a firewall as security personnel at the gate and an IDS device is a security camera after the gate. A firewall can block connection, while a Intrusion Detection System (IDS) cannot block connection. An Intrusion Detection System (IDS) alert any intrusion attempts to the security administrator.


A firewall is a hardware and/or software which functions in a networked environment to block unauthorized access while permitting authorized communications. Firewall is a device and/or a sotware that stands between a local network and the Internet, and filters traffic that might be harmful.

An Intrusion Detection System (IDS) is a software or hardware device installed on the network (NIDS) or host (HIDS) to detect and report intrusion attempts to the network.

We can think a firewall as security personnel at the gate and an IDS device is a security camera after the gate. A firewall can block connection, while a Intrusion Detection System (IDS) cannot block connection. An Intrusion Detection System (IDS) alert any intrusion attempts to the security administrator.

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🔶Firewall identification

Normally, firewalls can be identified for offensive purposes. Firewalls are usually a first line of defense in the virtual perimeter; to breach the network from a hacker perspective, it is required to identify which firewall technology is used and how it’s configured. Some popular tactics are:

🔸Port scanning
Hackers use it for investigating the ports used by the victims.
Nmap is probably the most famous port-scanning tool available.

🔸Firewalking
The process of using traceroute-like IP packet analysis in order to verify if a data packet will be passed through the firewall from source to host of the attacker to the destination host of the victim.

🔸Banner grabbing
This is a technique to enable a hacker to spot the type of operation system or application running on a target server. It works through a firewall by using what looks like legitimate connections.

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🔶Is IDS before or after firewall?

An intrusion detection system is placed behind a firewall but before the router. This location maximizes effectiveness, as the firewall can handle different types of threats to an IDS, and both will want to be in front of the router so that malicious data does not reach the users.

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🔶Latest Nuclei Release v2.8.3!

https://github.com/projectdiscovery/nuclei/releases/tag/v2.8.3

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🔶What is Routing/ Packet Forwarding?

Routing is the process by which systems decide where to send a packet. Routing protocols on a system “discover” the other systems on the local network. When the source system and the destination system are on the same local network, the path that packets travel between them is called a direct route.

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🔶 How exactly does a router forwards packets?


Well — because router simply accepts an incoming packet on an interface; then send this packet out to another interface. Since a router can have multiple interfaces; it needs to intelligently choose an exit interface that can leads the packet to its intended destination. In the figure above, Router7 gets an packet on the left interface; and it ‘forwards’ this packet out to the right interface.

🔶 Why not send this packet out to the middle interface?

Router made forwarding decision based on its routing table. The routing table contains entries of destination networks; and which exit interface to forward the packet to. This exit interface — is determined by many factors. First, it has to leads to the destination network. Second, it has to be the best path that leads to the destination network. All these information is stored in routers’ routing table.

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Routing Table

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🔶The structure of a Routing Table
▫️Codes
The code section indicates the types of routing for each routes. The code is abbreviated into C, R, S etc. We simply refers to the code table at the start of the routing table to corresponding routing types.

‘C’ is the most common tag; which indicate the directly connected networks. ‘C’ automatically appears on the routing table whenever a new network is added to it directly. No configurations are needed for ‘C’ networks. In our example, we imply that there are 2 networks directly connected to the this router.

‘S’ indicates static routing; ‘S’ appears when we configure static route to a destination network. ‘S’ also appears when we configure a default route on the router (default route is a type of static route). Here we imply that there is a static route leading to 192.168.3.0 network.

‘R’ indicates RIP protocol; which is a type of dynamic routing. In fact, all codes corresponds to dynamic routing except for ‘C’ and ‘S’. ‘R’ appears on the table when we configure RIPv1 or RIPv2 on the source router and also the destination router. ‘R’ does not appear if only one side is configured with RIP. Here, we imply that there is one dynamic route that leads to 192.168.2.0 network.

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🔶The structure of a Routing Table (part2)

▫️Destination Networks
As the name implies, the destination network component indicates the network address of the destination. It means the ‘network’ that we are trying to get to from this router. This is similar to the ‘destination’ we typed into Google maps for navigation.

Remember that every network has a network address, and packets are sent from one network to another based on this address (not host address). If the network address is not known but we have a host IP within that network; we need to calculate the network address by performing the ‘AND’ operation using the hostIP and the subnet mask of the network.

In our example, this router know its way to 4 different networks; namely, 192.168.1.0/24, 192.168.2.0/24, 192.168.3.0/24 and 200.1.1.0/24.

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🔶What is switch in routing?

A switch router is a device that combines the abilities of both switches and routers for routing data around and between networks. This device is able to forward data based on a device's physical address, as a switch, as well as forward packets based on the location of the next hop address as a router.

Layer 3 switches are thus able to segregate ports into separate VLANs and perform the routing between them. Like traditional router, a layer 3 switch can also be configured to support routing protocols such as RIP, OSPF, and EIGRP.

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🔶Three Switch Functions at Layer 2
There are three distinct functions of layer 2 switching (you need to remember these!): address learning, forward/filter decisions, and loop avoidance.

🔸Address Learning Layer 2 switches and bridges remember the source hardware address of each frame received on an interface, and they enter this information into a MAC database called a forward/filter table.

🔸Forward/Filter Decisions When a frame is received on an interface, the switch looks at the destination hardware address and finds the exit interface in the MAC database. The frame is only forwarded out the specified destination port.

🔸Loop Avoidance If multiple connections between switches are created for redundancy purposes, network loops can occur. Spanning

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📽 #Tutorials #New_Video #android_penetration_testing

🌐 41-How to Hack any Android Phone using Armitage

🌐 42-How to hack android with open link with armitage

🌐 43-How to Hack Android Devices Using the StageFright Vulnerability

🌐44-Hiding backdoor inside apk files and bypass antivirus

🌐45-Embed a Metasploit Payload in an Original .Apk File(Advanced method)

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🖥 سری ویدیو های کنفرانس های مرتبط با امنیت

🎥UltraLearn: Next-Generation CyberSecurity Learning Platform


👨‍💻مدرس :سعید رئیسی

📄لینک مقاله:
https://ieeexplore.ieee.org/document/9685940
📜لینک ویدیو:
https://youtu.be/ezL5_rmxV4k

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🔶What is fault tolerance?

Fault tolerance refers to the ability of a system (computer, network, cloud cluster, etc.) to continue operating without interruption when one or more of its components fail.

e.g.) Hardware systems with identical or equivalent backup operating systems. For example, a server with an identical fault tolerant server mirroring all operations in backup, running in parallel, is fault tolerant.

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