This can vary depending on whether the remote server uses SSL and if it accepts FTPS connections (which the majority of servers do). If the server you’re trying to connect with is secured with FTPS, just edit the domain prefix from ftp: // to ftps: //. If you want to avoid having to input these details every time you want to connect, click on the “+” button on the right to bookmark the server details.
Input the details of the connection address with ftp: // or the relevant IP address for the desired server.Towards the bottom of the drop-down menu, click on “Connect to the server”. macOS actually has its own proprietary client that can be easily accessed with these steps: Although an FTP client for Mac can be a very useful tool, you don’t necessarily need such an app to connect to a remote server.