SSH - Secure Shell

SCP - Secure Copy

SFTP - Secure File Transfer Protocol

Telnet

SMTP - Simple Mail Transfer Protocol

DNS - Domain Name Service

TFTP - Trivial File Transfer Protocol

HTTP - Hyper Text Transfer Protocol

Kerberos

POP3 - Post Office Protocol V3

NNTP - Network News Transfer Protocol, used to transport Usenet articles

RPC/DCOM-scm

NetBIOS - used to conduct name querying, sending, and other functions over a NetBIOS connection

IMAP - Internet Message Access Protocol, used to receive email from a mail server with more features than POP3

SNMP - Simple Network Management Protocol is used to remotely monitor network devices

SNMPTRAP - Used to send Trap and InformRequests to the SNMP manager on a network

LDAP - Lightweight Directory Access Protocol, used to maintain directories of users and other objects

HTTPS - Hyper Text Transfer Protocol Secure, transmits web page data to a client over a SSL/TLS encrypted connection

SMB - Server Message Block, used to provide shared access to files and other resources on a network

SMTP with SSL/TLS - Simple Mail Transfer Protocol, used to send email over internet with an SSL and TLS secure connection

Syslog - used to conduct computer message logging, especially for Routers and Firewall logs

LDAP SSL/TLS

iSCSI - used for linking data storage facilities over IP

FTPS - File Transfer Protocol Secure is used to transfer files from host to host over an encrypted connection

IMAP4 with SSL/TLS - Internet Message Access Protocol, used to receive mail from a mail server over an SSL/TLS encrypted connection