* '''Authentication mechanism''': How both ends will authenticate. The easier solution is the Shared Key. You can also use TLS if you want, but it's usually for power users (you need to manage a PKI, you can use [[PHPki]] for this if you want) | * '''Authentication mechanism''': How both ends will authenticate. The easier solution is the Shared Key. You can also use TLS if you want, but it's usually for power users (you need to manage a PKI, you can use [[PHPki]] for this if you want) |