Page permalink Always use the following permalink when referencing this page. It will remain unchanged in future help versions. https://docs.sophos.com/nsg/sophos-firewall/20.0/Help/en-us/webhelp/onlinehelp/index.html?contextId=system-overview Your browser doesn’t support copying the link to the clipboard. Please copy it manually. System Sophos Central Sophos Central Security Heartbeat Profiles and Objects Profiles Hosts and services Administration Licensing Device access Admin and user settings SNMP Backup and firmware Backup and restore Import-Export API Firmware Certificates Certificates Certificate authorities Certificate revocation lists Advanced services Default services and ports Reserved ports IPv6 support FastPath offloading Was this page helpful? Thank you for your feedback Thank you for your feedback. Help us improve this page by giving us more information.