Packet Capture is a technique used in computer networking to intercept and log traffic that passes over a network. This process involves capturing data packets, which are small units of data transmitted over the internet. By analyzing these packets, network administrators can monitor network performance, troubleshoot issues, and enhance security. Tools like Wireshark are commonly used for packet capture, allowing users to view the contents of the packets in real-time. This information can help identify unauthorized access, detect network anomalies, and ensure that data is being transmitted securely. Overall, packet capture is essential for maintaining a healthy network environment.