2.1 Compare and contrast Transmission Control Protocol (TCP) and User Datagram Protocol (UDP) ports, protocols, and their purposes.

What is FTP (File Transfer Portal) used for?

-Share files with users in LAN or WAN-Supports authentication, authorization, and directory browsing

What is the FTP port?

TCP 20,21

T/F - FTP is encrypted and recommended.

False (Unencrypted and not recommend, use SFTP instead)

SFTP and Secure Shell (SSH) use the same port because...

SFTP is an extension of SSH

What is Secure Shell (PuTT.Y - ex) do?

Provides encrypted remote command line access to interact with a server

What port number does Secure Shell use?

TCP 22

What did SSH version 2 add?

SFTP and SCP support

What is Telnet used for?

Provides remote command line access to interact with a server

t/f - Telenet is still used as its very secure.

False (Use SSH instead)

What port number does telenet use?

TCP 23

What are the three mail protocols?

SMTP (Simple Mail Transfer Protocol), POP3 (Post Office Protocol), IMAP (Internet Message Across Protocol)

What does SMTP (Simple Mail Transfer Protocol) do?

Sends outgoing mail to a server

What is the SMTP (Simple Mail Transfer Protocol) port number?

TCP 25

What does DNS (Domain Name Services) do?

-Resolves Domain name to IP addresses (Google.com -> Numbers)-Provides name to IP address resolution for host

What is DNS (Domain Name Services) port number?

TCP/UDP Port 53

What does DHCP (Dynamic Host Configuration Port) do?

-Provides various configurations to clients in an IP network via broadcast-Gives out IP addresses in a network

What are the DHCP port numbers?

UDP 67 is the server port, UDP 68 is the client port

What is HTTP (Hyper Text Transfer Protocol) used for?

Transmitting webpages insecurely

What is the port number for HTTP (Hyper Text Transfer Protocol)?

TCP 80

What is HTTPS (Hyper Text Transfer Protocol) port number?

TCP 443

What is HTTPS (Hyper Text Transfer Protocol) used for?

Used to securely transmit encrypted webpages using SSL or TLS

What does POP3 (Post Office Protocol) do?

Downloads incoming mail from server

What is POP3 (Post Office Protocol) port number

TCP 110

What does NetBios (Network Basic Input/ Output System)

Provides various network communication features in a Windows Network. (Basically share files between Windows Machines)

What does IMAP (Internet Message Across Protocol) do?

Synchronizes incoming mail from a server

What is IMAP (Internet Message Across Protocol) port number?

TCP 143

t/f - IMAP (Internet Message Across Protocol) and POP3 (Post Office Protocol) can be used together?

False (One or the other only).

What does SNMP (Simple Network Managment Protocols) do?

Used to query, configure, and monitor host in a LAN

What is the SNMP (Simple Network Managment Protocols) port number?

UDP 161/162

SNMPv3 provides what?

Encrypted communication

What does LDAP (Lightweight Directory Access Portal) do?

Used in domain network environment to facilitate system and user management (What makes your directory work)

What port does LDAP use?

TCP/UPD 389

What is CIFS (Common Internet File System)?

Open implementation of SMB used on Linux and macOS

What is the port for CIFS?

TCP 445

What does RDP (Remote Desktop Protocol)

Used to securely remotely access a Windows desktop

What is the port number for RDP (Remote Desktop Protocol)?

TCP 3389

TCP is... (HTTPS, SSH)

-Reliable-Connection-Oriented-Virtual Circuit-Sequenced-Uses Acknowledgements-24-60 bytes (high over turn)

UDP is... (DHCP, TFTP)

-Unreliable-Connectionless-No virtual circuit-Unsequenced-No acknowlegments-8 bytes (light weight)-Giving only, doesn't check if data is received

Network Basic Input/Output System (NetBIOS)/

NetBIOS over TCP/IP (NetBT) port number

UDP/TCP 137/139

Telnet provides what kind of authentication (insecurely)?

Username and password

What protocol would be used when a WINS server tries to resolve a host name into an IP address on a Windows-based LAN?

NetBios

What type of network is netbios/netbt used in?

LAN

What does SMB/CIFS do?

• Provides shared access to files, directories, and devices

• Used mainly by Windows computers

Examples of connectionless protocols

• DHCP

• TFTP

Examples of connection-oriented protocols

• HTTPS

• SSH

Common applications that use TCP

• File transfer

• Email communication

• Web browsing

Common applications that use UDP

• Online gaming

• Video conferencing

• Live streaming

• Voice over IP (VoIP)

An SNMP management station receives SNMP notifications from Agents on port

UDP 162

An SNMP Agent receives requests on port

UDP 161

Which port enables the FTP's Data Connection for sending file data

20

The FTP's Control Connection for administering a session is established through

21