Configuration migration best practice

Zyxel_Emily

Zyxel migration best practices focus on using the Zyxel Firewall Configuration Converter to migrate settings from older USG/ATP/VPN models to new USG FLEX H-Series. Essential steps include taking a full configuration backup (startup-config.conf), updating firmware, using the automated tool, and manually validating security policies and NAT rules. 

Top Zyxel Migration Best Practices

• Utilize Official Tools: Use the Zyxel Configuration Migration Tool to automate transferring settings from older ZLD V5.37 models to the new H-series (e.g., USG FLEX 50H).
• Backup & Test: Always back up and export the current configuration (startup-config.conf) via Maintenance > File Manager before migrating.Keep this file in a secure location so you can restore your settings if needed. Perform a "dry run" by importing a test configuration if possible.
• Version Compatibility: Ensure the source firewall is updated to a compatible firmware version, as the converter works best from specific ZLD versions.
• Manual Verification & Cleanup: Since 1:1 mapping isn't always perfect, manually verify network interfaces, NAT rules, and security policies after the conversion, as outlined in Zyxel Community.
• Validate Security Policies: Re-validate all security policies, especially if moving from older models where security service implementation may differ. 

Migration Strategies & Tips

• Handling Incompatibilities: If features do not directly map, the tool may omit them. Perform a thorough review of the import logs.
• Port Mapping: Pay close attention to port mappings (LAN/WAN) during the conversion process, especially if the new device has a different port configuration.
• Update Credentials: Take this opportunity to update any hard-coded credentials or security settings in the configuration. 

For a smooth transition, always check the Zyxel Community for the latest.