Security+ Port Numbers I - Review

Question 1

Kerberos

Answer 1

TCP/UDP
Port 88

• Used for Network Authentication using a system of Tickets within a Windows Domain.

Question 2

NetBIOS

Answer 2

TCP/UDP
Port 137 - 139

• Used to conduct name querying, sending of data, and other functions over a NetBIOS Connection.

Question 3

SNMPTRAP

Answer 3

TCP/UDP
Port 162

Simple Network Management Protocol TRAP
- Used to send TRAP and InformRequests to the SNMP Manager on a Network.

Question 4

RPC

Answer 4

TCP/UDP
Port 135

Remote Procedure Call
- Used to locate DCOM ports to request a service from a program on another computer on the Network.

Question 5

SNMP

Answer 5

UDP
Port 161

Simple Network Management Protocol
- Used to remotely monitor Network devices.

Question 6

LDAP SSL/TLS

Answer 6

TCP/UDP
Port 636

Lightweight Directory Access Protocol with SSL/TLS
- Used to maintain directories of users and other objects over an SSL/TLS Encrypted Connection.

Question 7

FTPS

Answer 7

TCP
Ports 989/990

File Transfer Protocol Secure
- Used to transfer files from Host to Host over an Encrypted Connection.

Question 8

MS SQL-s

Answer 8

TCP
Port 1433

Microsoft SQL Server
- Used to receive SQL database queries from Clients.

Question 9

SSH
SCP
SFTP

Answer 9

TCP/UDP
Port 22

SecureShell
SecureCopy
Secure File Transfer Protocol
- Used to Remotely administer Network devices and systems.

Question 10

FTP

Answer 10

TCP
Port 21

File Transfer Protocol
- Used to transfer files from Host to Host
- Unsecured

Question 11

Telnet

Answer 11

TCP/UDP
Port 23

• Unencrypted method to remotely administer Network devices.
• Should NOT be used.

Question 12

SMTP

Answer 12

TCP
Port 25

Simple Mail Transfer Protocol
- Used to SEND Email over the Internet via Mail Servers.

Question 13

DNS

Answer 13

TCP/UDP
Port 53

Domain Name Service
- Used to resolve Hostnames to IP Addresses and IP Addresses to Hostnames.

Question 14

TFTP

Answer 14

UDP
Port 69

Trivial File Transfer Protocol
- Used as a simplified version of FTP (File Transfer Protocol) to put a file on a Remote Host or get a file from a Remote Host.

Question 15

HTTP

Answer 15

TCP
Port 80

Hyper Text Transfer Protocol
- Used to transmit web page data to a Client for Unsecured Web Browsing.

Question 16

POP3

Answer 16

TCP
Port 110

Post Office Protocol, Version 3
- Used to RECEIVE Email from a Mail Server
- Unencrypted

Question 17

IMAP4

Answer 17

TCP
Port 143

Internet Message Access Protocol, Version 4
- Used to RECEIVE email from a Mail Server with additional features.
- Unencrypted

Question 18

LDAP

Answer 18

TCP/UDP
Port 389

Lightweight Directory Access Protocol
- Used to maintain directories of users and other objects.
- Unencrypted

Question 19

HTTPS

Answer 19

TCP
Port 443

Hyper Text Transfer Protocol Secure
- Used to transmit web page data to a client over an SSL/TLS Encrypted Connection.

Question 20

SMB

Answer 20

TCP
Port 445

Server Message Block
- Used to provide shared access to files and other resources on a Network.

Question 21

IMAP4 SSL/TLS

Answer 21

TCP
Port 993

Internet Message Access Protocol, Version 4 with SSL/TLS
- Used to RECEIVE email from Mail Servers using an SSL/TLS Encrypted Connection.
- More features than POP3.

Question 22

POP3 SSL/TLS

Answer 22

TCP
Port 995

Post Office Protocol, Version 3 with SSL/TLS
- Used to RECEIVE email from Mail Servers using an SSL/TLS Encrypted Connection.

Question 23

RDP

Answer 23

TCP/UDP
Port 3389

Remote Desktop Protocol
- Used to remotely view and control other Windows Systems via a Graphical User Interface.
- Microsoft proprietary.

Question 24

SMTP SSL/TLS

Answer 24

TCP
Ports 465/587

Simple Mail Transfer Protocol with SSL/TLS
- Used to SEND email over the Internet with an SSL/TLS Encrypted Connection.