|FTP is a very fast and versatile way of transferring files, being one of the most used in the internet. Mostly the developer wants to host files on his website on the internet.
|With SSH you can virtually access a server as if you were in a command terminal, DOS type. This is widely used in linux servers.
|Telnet is as if it were the same as SSH, but more popular in Windows and less secure than SSH.
|Port 80 is the default port used by web servers in hosting web sites. Where web pages is provided without encryption.
|This protocol is used by Windows for shared network and printer sharing. It is very important that this port is closed on the internet for the security of your device.
|Port 443 is the default port used by secure web servers. Where web pages are provided in encrypted form.
|Remote Desktop Protocol (RDP) is used to connect remotely to computers running Windows. This is standard for accessing windows server servers.
|VNC can be used to connect to a machine whether it is Windows, MAC, Linux. This can be done both on the internal network and on the internet.