FTP - File Transport Protocol

SSH - Secure Shell

Telnet

smtp Simple Mail Transfer Protocol

dns Domain Name Service

http

pop3 Post Office Protocol 3

https

IMAP4 - Internet message access protocol version 4

RDP - Remote Desktop Protocol

SSL VPN

DHCP - Dynamic Host Configuration Protocol

Used to transfer files between computers on a network

The Internet's system for converting alphabetic names into numeric IP addresses. For example, when a Web address (URL) is typed into a browser, DNS servers return the IP address of the Web server associated with that name.

A network management protocol used on UDP/IP networks whereby this server dynamically assigns an IP address and other network configuration parameters to each device on a network so they can communicate with other IP networks.

It is used for secure communication over a computer network, and is widely used on the Internet.

A communication protocol for electronic mail transmission.

Protocols for establishing authenticated and encrypted links between networked computers.

An application protocol used on the Internet or local area network to provide a bidirectional interactive text-oriented communication facility using a virtual terminal connection