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/19.0/Help/en-us/webhelp/onlinehelp/index.html?contextId=HostsandServices Your browser doesn’t support copying the link to the clipboard. Please copy it manually. Hosts and servicesYou can define and manage system hosts and services. The following host types are available: IP host MAC host FQDN host Country group Sophos Firewall includes common services by default, such as DHCP and DNS. You can also add, edit and delete custom services. Was this page helpful? Thank you for your feedback Thank you for your feedback. Help us improve this page by giving us more information.