Ports

Question 1

File Transfer Protocol (FTP)

Answer 1

Tcp/20 (Active Mode Data)
Tcp/21 (Control)

Transfers files between systems

Question 2

Secure Shell (SSH)

Answer 2

Tcp/22

Encrypted Communications Link
Telnet but better

Question 3

Telecommunications Network

Answer 3

Tcp/23
Unsecured communication between systems

Question 4

Simple Mail Transfer Protocol (SMTP)

Answer 4

Tcp/25
Server to server email communication

Question 5

Domain Name System (DNS)

Answer 5

UDP/53
Converts Names to IP Addresses

Question 6

Dynamic Host Configuration Protocol (DHCP)

Answer 6

UDP/67, UDP/68
Automated configuration of IP Addresses

Dynamic, Ips are assigned In real time and can also be reserved so certain devices always have the same IP

Question 7

Hypertext Transfer Protocol (HTTP)

Answer 7

Web server communication
Tcp/80

Question 8

Hypertext Transfer Protocol Secure (HTTPS)

Answer 8

Tcp/443
Web server communication with Encryption

Question 9

Post Office Protocol Version 3 (POP3)

Answer 9

Tcp/110
Basic Mail transfer Functionality (OLD)

Question 10

Internet Message Access Protocol V4

Answer 10

Tcp/143
Includes management of email Inbox for multiple clients

Question 11

Server Message Block (SMB)

Answer 11

Protocol Used by Microsoft Windows
File Sharing, Printer Sharing
Also called Common Internet File System (CIFS)

Old computers use NetBIOS
Network Basic Input/output System
UDP/137 NetBIOS name services (nbname)
Tcp/139 NetBIOS session Service (nbsession)

New computers use:

Direct over tcp/445 (NetBIOS-less)

Direct connection without NetBios

Question 12

Simple Network Management Protocol (SNMP)

Answer 12

Gather Statistics from network Devices
Queries: UDP/161
Traps: UDP/162
V.1: Structured Tables
V.2: data enhancements, Bulk Transfers, Still in the clear
V.3: A secure Standard, Message Integrity, Authentication, Encryption

Question 13

Lightweight Directory Access Protocol (LDAP)

Answer 13

Store and retrieve information in a network directory
Commonly used in Microsoft Active Directory
tcp/389

Question 14

Remote Desktop Protocol (RDP)

Answer 14

Share a desktop from a remote location over
Tcp/3389

Remote desktop services on many windows versions

Can connect to an entire desktop or just an application

Clients for Windows, macOS, Linux, Unix, iPhone, Android and more