This network diagram illustrates a typical network topology for a small office environment. The network originates from the external "Internet" connection, the source of all network traffic. The internet signal first connects to a "Modem," responsible for converting between digital and analog signals to establish connectivity with the ISP. Following the modem is a "Firewall," serving as the first line of network security, monitoring and filtering incoming and outgoing traffic to protect the internal network from external threats. After the firewall, "Router 1" handles packet routing and network address translation, connecting the internal network to the outside. Two main branches extend from the router: The first is "Phòng kinh doanh" (Business Department), representing the network area for sales, marketing, or customer service teams, providing office network access. The second is "Service room," likely referring to a server room or technical support department, used for hosting internal servers or providing technical support services. This topology demonstrates a standard security architecture from internet access to internal network segmentation.
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