Network Protocols Basics

What does FTP do?

allows computer to transfer files back and forth.

What is the original port for FTP?

20/21

What is the secure port for FTP?

989/990

What does SSH do?

enables the remote control of computers and enables data to be exchanged between computers

What port does SSH use?

23

What does Telnet do?

provides remote access to other hosts using the command line interface (CLI)

What port does Telenet use?

22

What does DNS do?

Translate domain names to IP addresses

What port does DNS use?

53

What type of connection does FTP use?

TCP (connected)

What does SMTP do?

sends emails through the network.

What port does SMTP orginally use?

25

What port would use SMTP for to be secure?

465 / 587

What does DHCP do?

used to automatically assign IP addresses to hosts

What port does DHCP use?

67/68

What port does HTTP use?

80

What port does HTTPS use?

443

What does POP3 do?

is used by email clients to retrieve incoming email from a mail server

what original port does POP3 use?

110

What secure port does POP3 use?

995

What does IMAP do?

that enables messages to remain on the email server so they can be retrieved from any location

What port does IMAP originally use?

143

What secure port does IMAP use?

993

What connection type does use SMTP, POP3, and IMAP use.

TCP

What does LDAP do?

is used to access and maintain distributed directories of information

What is the original port LDAP uses?

389

What secure port does LDAP use?

636

What does RDP do?

facilitate connections to remote computers and allow full remote control

What port does RDP use?

3389

What does SMB do?

provides access to shared items such as file and printers

What port does SMB use?

445

What ports does NetBIOS/NetBT use?

137-139

What port does SNMP originally use.

161

What port does SNMP trap use?

162

What does SNMP do?

is used as the standard for managing and monitoring devices on a network.