NAT (Static, Dynamic, and PAT) configuration in one video || step-by-step || cisco packet tracer🔥
🏁Chapter/ Bookmark -
0:00 - Intro
0:06 - NAT explanation
0:40 - Table of Private IP address space
2:18 - Network Design
5:30 - IP configuration
11:10 - Static Route configuration
12:16 - Static NAT configuration
15:44 - Dynamic NAT configuration
21:16 - PAT configuration
Description:-
Network Address Translation (NAT) is a technique used in computer networking that allows multiple devices within a private network to share a single public IP address. NAT provides several properties that enhance network security and address exhaustion issues. First, it enables private IP addresses to be used within a local network, which provides an extra layer of security by concealing the actual IP addresses of the devices from the external network. This helps prevent direct access to devices within the network from external sources, acting as a basic firewall. Second, NAT allows for translating private IP addresses to public IP addresses, enabling communication between devices in the private network and external networks, such as the Internet. It accomplishes this by mapping the private IP address and port numbers to a unique public IP address and port combination. This translation process ensures that traffic from multiple devices can be routed correctly and avoids IP address conflicts.
Furthermore, NAT helps conserve public IP addresses, which are limited in number, by allowing multiple devices to share a single public IP address. This is achieved by utilizing port numbers to distinguish between different connections. Overall, NAT provides security, address conservation, and enables communication between private and public networks, making it a fundamental component in modern networking.
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