The user needs an account and password and responds appropriately when ftp or telnet asks for the credentials.
Telnet is similar to HTTP and FTP in that all three use the TCP protocol for connection-oriented
tcp
telnet,FTP,e-mail etc
Students and professors will be able to Telnet to the server but unable to FTP files to and from the server.
FTP and Telnet are considered OSI layer 7 protocols. If you are blocking the service, then layer 3 or 4 (network or transport) is responsible.
Telnet is a network protocol used on the Internet or local area networks. Its concept was conceived in 1969 and is one of the first internet standards for communicating across computers. FTP - File Transfer Protocol is similar to Telnet but does not require is much knowledge of command line usage. FTP is used to create a file server known as an FTP server which is a location created on the web that allows banks of files to be hosted/made available for download. Many file sharing services are set up in this manner.
If you want better security, use secure shell (ssh) instead of telnet. Actually, don't use telnet at all if possible, as it transmits all information in plain text.
Telnet is an application layer protocol (Layer 7). Its functionality is similar to any of the layer 7 protocols, including DHCP, DNS, FTP, etc.
FTP is a File Transfer Protocol (a method of transferring files from one location to another.... Telnet would be more of an emulation/connectivity protocol where you can connect to another system and Signon / natigate through the other systems menu option / type commands etc.... eg. you could use Telnet as 5250 emulation and sign on to the iseries (AS/400) once, connected you can do whatever the host system/user security permits you cannot do this in ftp
Using FTP, TELNET, SNMP, SMTP etc we can share resources in computer networking.
Students and professors will be unable to Telnet to the server or FTP files to or from the server