Cisco Network diagram example - NAT

This network diagram example represents Network Address Translation (NAT) in a Cisco network environment, illustrating how devices within a local network (private IPs) communicate with external networks (public IPs) via NAT.

Overview of NAT

Network Address Translation is a method used to remap one IP address space into another by modifying the network address information in the IP header of packets while they are in transit. It is commonly implemented on routers and firewalls to allow devices with private IP addresses (e.g., in a home or business network) to connect to the internet using a single public IP address. NAT improves security by hiding the internal IP structure of a network from external entities.

Network Diagram Breakup

This network diagram example illustrates how a local device, PC-1 (10.0.0.2), within a private network communicates with external networks through a router that performs the NAT process. The S100 server and PC-1 are connected to a switch (SW1), which forwards the local traffic to the router. The router translates the private IP addresses of the local network devices into a public IP address (151.6.0.9), represented as the connection to the ISP-GW. The traffic then moves to the external networks via additional ISP routers (ISP-R1, ISP-R3), which are part of the broader internet infrastructure.

The flow of data is indicated by arrows, showing the direction of communication from the local devices through the switch, then through the router, and finally to the public internet. The return traffic follows the reverse path, with the router translating the public IP back into the corresponding private IP before forwarding it to the local devices.

This diagram effectively represents the flow of network communication between private and public networks facilitated by NAT, with each device playing a specific role in the translation and forwarding process.

Customize this to create your own

This Cisco Network Address Translation flow diagram shows how internal devices communicate with the external world through a router that translates private IPs into public IPs. The example provides a clear visual representation of the key devices and how NAT facilitates secure and efficient communication between internal and external networks. It is highly customizable to fit any network setup and can be expanded with additional layers for security or network complexity.

With MockFlow Flows, you can easily drag and drop components from the Cisco network component pack and add connectors to easily create your network diagram from scratch or customize this example. You can also share the diagram online easily with a link. Start creating your network diagram today with MockFlow.