> Chapter 5 - Best Practices > Security Profiles > Security
- Use NTP to synchronize time on the FortiGate and the core network systems, such as email servers, web servers, and logging services.
- Enable log rules to match corporate policy. For example, log administration authentication events and access to systems from untrusted interfaces.
- Minimize adhoc changes to live systems, if possible, to minimize interruptions to the network. When not possible, create backup configurations and implement sound audit systems using FortiAnalyzer and FortiManager.
- If you only need to allow access to a system on a specific port, limit the access by creating the strictest rule possible.