Protocols & Common Ports

Question 1

FTP

Answer 1

File transfer with remote host

TCP Port: 20/21

Question 2

SSH

Answer 2

Secure Shell, secure connect to remote host

TCP Port: 22

Question 3

SFTP

Answer 3

Secure FTP, file transfer over SSH

TCP Port: 22

Question 4

SCP

Answer 4

Secure copy, secure file transfer + file’s original date/time info
TCP Port: 22

Question 5

Telnet

Answer 5

Remote host connect, normal by terminal emulator

TCP Port: 23

Question 6

rsh

Answer 6

Remote shell, allows commands to be executed remotely

TCP Port: 514

Question 7

DNS

Answer 7

Resolve IPs to friendly names.

TCP/UDP Port: 53

Question 8

NetBIOS

Answer 8

Network communication for LANs that use NetBIOS
TCP Port: 139
UDP Ports: 137, 138

Question 9

SMB

Answer 9

Server message block, sahre files, printers, and net resources.
TCP Port: 445

Question 10

TFTP

Answer 10

TrivialFTP, no authentication required.

UDP Port: 69

Question 11

DHCP

Answer 11

Dynamically assigns IPs to devices.

UDP: 67, 68

Question 12

HTTP

Answer 12

Hypertext Transfer Protocol, get webserver content.

TCP Port: 80

Question 13

HTTPS

Answer 13

Secure HTTP, securely get webserver content.

TCP: 443

Question 14

SMTP

Answer 14

Simple Mail Transfer Protocol, send email.

TCP: 25

Question 15

POP3

Answer 15

Post Office Protocol V3, old protocol to retrieve email from server.
TCP: 110

Question 16

IMAP

Answer 16

Internet Message Access Protocol, retrieves e-mail from server.
TCP: 143

Question 17

NNTP

Answer 17

Network News Transport Prtocol, posting and reading usenet servers.
TCP: 119

Question 18

NTP

Answer 18

Network Time Protocol, sync clock with a time server.

TCP: 123

Question 19

SNTP

Answer 19

SimpleNTP, sync time between devices, less accurate.

TCP: 123

Question 20

IMAP4

Answer 20

IMAP version 4, get email, newer more secure.

TCP: 143

Question 21

LDAP

Answer 21

Lightweight Directory Access Protocol, directory services.

TCP: 389

Question 22

RTSP

Answer 22

Real Time Streaming Protocol, communicates and controls media server files.
TCP/UDP: 554

Question 23

RDP

Answer 23

Remote Desktop Protocol, Microsoft protocol for view/control of remote computer.
TCP: 3389

Question 24

SNMP

Answer 24

Simple Network Management Protocol, monitor/manage devices.

UDP: 161

Question 25

SNMP Trap

Answer 25

Notification sent from SNMP agent to manager. | TCP/UDP: 162

Question 26

SIP

Answer 26

Session Initiation Protocol, Create and end session for media connections, including VoIP. TCP: 5061 UDP: 5060

Question 27

MGCP

Answer 27

Media Gateway Control, call control and communication for VoIP. UDP: 2427, 2727

Question 28

H.323

Answer 28

Signaling protocol for multimedia comms. | TCP: 1720

Question 29

RTP

Answer 29

Real-time Transport Protocol, deliver media based data over networks, like VoIP. TCP/UDP: 5004, 5005