chore: sync content to repo (#9928)

Co-authored-by: nilbuild <4921183+nilbuild@users.noreply.github.com>
2026-10-24 23:06:33 +08:00 · 2026-05-11 17:20:20 +02:00
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+# Cisco Packet Tracer
+
+Cisco Packet Tracer is a visual simulation and modeling tool that allows users to design, configure, and troubleshoot network topologies without the need for physical hardware. It provides a drag-and-drop interface where you can place virtual routers, switches, and end devices, and then execute Cisco IOS commands to test network connectivity and protocols. It is widely used to practice networking concepts, build simulated lab environments, and prepare for certification exams in a safe, risk-free virtual space.
+
+Visit the following resources to learn more:
+
+- [@article@Cisco Packet Tracer](https://www.netacad.com/cisco-packet-tracer)
+- [@article@What is Cisco Packet Tracer? | Free Training and Download](https://www.netcomlearning.com/blog/what-is-cisco-packet-tracer)
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+# EVE-NG
+
+EVE-NG (Emulated Virtual Environment - Next Generation) is a multi-vendor network emulation platform that allows users to create virtual network topologies. It runs as a virtual machine on a server, enabling engineers to drag and drop various virtual appliances, such as routers, switches, and firewalls, into a workspace to simulate complex enterprise environments. It provides a functional environment to test configurations, troubleshoot connectivity, and practice new protocols without the need for physical hardware.
+
+Visit the following resources to learn more:
+
+- [@official@EVE-NG](https://www.eve-ng.net/)
+- [@video@EVE NG Installation](https://www.youtube.com/watch?v=FDbgTlr-tnw)
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+# GNS3
+
+GNS3 is a graphical network simulation software that allows users to design, configure, and test complex network topologies in a virtual environment. It works by combining real Cisco IOS images or open-source network operating systems with virtual machines to emulate hardware behavior, enabling engineers to build lab environments without the need for physical equipment. It uses a drag-and-drop interface that facilitates the creation and troubleshooting of routed and switched networks, making it a standard tool for study, certification preparation, and proof-of-concept testing.
+
+Visit the following resources to learn more:
+
+- [@official@GNS3](https://www.gns3.com/)
+- [@opensource@gns3](https://github.com/GNS3/gns3-gui)
+- [@video@GNS3 Installation](https://www.youtube.com/watch?v=Ibe3hgP8gCA&list=PLhfrWIlLOoKNFP_e5xcx5e2GDJIgk3ep6)
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+# NAT / PAT
+ 
+NAT, or Network Address Translation, is a method used by routers to map private IP addresses on a local network to a single public IP address before traffic leaves for the Internet. This allows many devices to share one public IP, which helps conserve the limited pool of available IPv4 addresses. PAT, or Port Address Translation, is an extension of NAT that also maps different port numbers to each internal device, allowing multiple simultaneous connections to be tracked and distinguished even when they all share the same public IP.
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+# Network Simulators
+
+Network simulators are software applications that allow engineers to create, configure, and test virtual network topologies without needing physical hardware. By modeling the behavior of devices like routers, switches, and firewalls, these tools enable the practice of complex configurations, troubleshooting scenarios, and protocol analysis in a safe, controlled environment. They serve as a practical platform for verifying network designs and preparing for certification exams by emulating various operating systems and network conditions.
+
+Visit the following resources to learn more:
+
+- [@article@Top 10 Most Popular Network Simulation Tools](https://www.pynetlabs.com/top-most-popular-network-simulation-tools/)