# How does Layer-7 analysis improve visibility in industrial networks?

Layer-7 analysis involves inspecting network traffic at the application layer to understand the specific actions being performed, such as which files are being accessed or which commands are being sent to a programmable logic controller. This provides much deeper visibility than traditional firewall logging, which only sees the source and destination at the network layer. By monitoring these granular details in real time, security teams can detect subtle anomalies that may indicate a sophisticated attack in progress. Our [evolution guide](https://www.agilicus.com/from-tunnels-to-zero-trust-the-evolution-of-industrial-remote-access/) explains this shift in visibility.

For more information, see [Industrial Cyber Security Best Practices](https://www.agilicus.com/white-papers/industrial-cyber-security-best-practices/).