Ports for Network+, Security+, and SSCP Exams

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Ports for Network+, Security+, and SSCP Exams

If you’re planning on taking a certification exam such as CompTIA Security+, CompTIA Network+, or SSCP you should have many of the well-known ports memorized. The objectives for the CompTIA Network+ exam lists many of the protocols and the ports spelling out exactly what you need to know. Similarly, the objectives for the CompTIA Security+ exam lists several protocols with a statement to identify the ports for each. The SSCP exam objectives are very generic but do indicate port numbers are needed.

Well known port numbers are matched to specific protocols and when you see the port, you should be able to identify the protocol. Sometimes you may be given the protocol and be required to identify the port. There are 1024 well known TCP and UDP (numbered 0 through 1023) but you don’t need to memorize them all. However, you do need to know certain ports for the CompTIA Security+, CompTIA Network+, and SSCP exams.

Logical Ports

The well-known ports are logical ports and have nothing to do with physical ports. For example, port 80 is the port used for Hypertext Transfer Protocol (HTTP) and port 443 is the port used for Hypertext Transfer Protocol Secure (HTTPS).

In contrast, a physical port on a switch or router is used to make a physical connection between devices. You can touch the physical port while the logical port is simply a number embedded in the packet.

Every packet has both a source port and a destination port along with a source IP address and a destination IP address. The IP address is used to get the packet to the destination system and when the packet is received, TCP/IP uses the port information to determine how to handle the packet. This blog on Understanding Ports for Security+ describes the process of how logical ports are used in more detail.

Pass the Security+ exam the first time you take it:
CompTIA Security+: Get Certified Get Ahead: SY0-401 Study Guide

TCP vs UDP Ports

Each of these logical ports are technically identified as either a Transmission Control Protocol (TCP) port or a User Datagram Protocol (UDP) port depending on which transport protocol they use. For example, HTTP can use either UDP port 80 or TCP port 80. It almost always uses TCP for guaranteed delivery but both TCP port 80 and UDP port 80 are reserved for HTTP.

Some protocols use only the UDP port. For example, Trivial File Transport Protocol (TFTP) uses UDP port 69 but not TCP port 69.

As you advance in the IT field, you’ll find that you need to know whether a protocol is using a TCP port or a UDP port. However for these exams, this depth of knowledge is rarely needed. Instead, you should focus on memorizing the port number. If you want to know specifically which transport protocol is used for any protocol, check out Wikipedia’s list of TCP and UDP port numbers.

Interestingly, Internet Assigned Numbers Authority (IANA) previously identified which transport protocol was used for each port in their Service Name and Transport Protocol Port Number Registry . However, they seem to have defaulted to just listing both TCP and UDP for each port. For example, Telnet (defined in RFC 854) only uses TCP port 23, not UDP. However, IANAs port number registry lists both TCP and UDP for Telnet.


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Realistic practice test questions for the Network+ exam
CompTIA Network+ N10-006 Practice Test Questions (Get Certified Get Ahead)

Network+ Ports

When preparing for the Network+ exam, you should know these ports.

ProtocolPort
FTP – File Transport Protocol20, 21
SSH – Secure Shell22
Telnet23
SMTP – Simple Mail Transport Protocol25
DNS – Domain Name System53
DHCP – Dynamic Host Configuration Protocol67, 68
TFTP – Trivial File Transport Protocol69
HTTP – Hypertext Transfer Protocol80
HTTPS – Hypertext Transfer Protocol Secure443
SSL VPN – Secure Sockets Layer virtual private network443
POP3 – Post Office Protocol version 3110
NTP – Network Time Protocol123
IMAP4 – Internet message access protocol version 4143
SNMP – Simple Network Management Protocol161
IPsec – Internet Protocol security (through the use of ISAKMP – Internet Security Association and Key Management Protocol)500
RDP – Remote Desktop Protocol3389

When you know the ports and understand the protocols, questions are much easier to answer. For example, consider this practice test question that could be in a Network+, Security+, or SSCP exam:

Q. What port do you need to close to block outgoing email?

A. Port 22

B. Port 25

C. Port 110

D. Port 443

Answer at the end of the blog.

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Full bank of more than 293* N10-006 Network+ practice test questions.All questions include explanations so you'll know why the correct answers are correct, and why the incorrect answers are incorrect.CheckCheck
Performance-based QuestionsSeveral sets of performance-based questions. Question types include drag and drop, matching, and sorting type questions. See a demo here.checksmchecksm

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Subnetting mini-tutorial that will help you answer two key question types
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 Network+ Study Materials

30 Day Package60 Day Package
Full bank of more than 293* N10-006 Network+ practice test questions.All questions include explanations so you'll know why the correct answers are correct, and why the incorrect answers are incorrect.CheckCheck
Performance-based QuestionsSeveral sets of performance-based questions. Question types include drag and drop, matching, and sorting type questions. See a demo here.checksmchecksm

Bonus #1

Flashcard Set
  • 200 Network+ Flashcards to reinforce key testable concepts
  • View in random and non-random modes.
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Subnetting mini-tutorial that will help you answer two key question types
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Beware of questions that do not include explanations - many people have identified errors in these and even when there aren't errors, these types of questions encourage you to memorize answers instead of understanding the underlying concepts.* Don't you hate those little asterisks. Normally they mean "forget what you just read, it's not really true." Not so here though. The bank starts with 293 multiple choice practice test questions, but I'm still adding to them. There will be more.** CompTIA identified five domains of objectives for the CompTIA Network+ exam. They are:
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  • 3.0 Network Security
  • 4.0 Troubleshooting
  • 5.0 Industry Standards, Practices, and Network Theory

Security+ Ports

When preparing for the Security+ exam, you should know these ports.

ProtocolPort
FTP – File Transport Protocol20, 21
SSH – Secure Shell22
SFTP – Secure File Transport Protocol (uses SSH)22
SCP – Secure Copy (uses SSH)22
Telnet23
SMTP – Simple Mail Transport Protocol25
TACACS – Terminal Access Controller Access-Control System49
DNS – Domain Name System53
DHCP – Dynamic Host Configuration Protocol67, 68
TFTP – Trivial File Transport Protocol69
HTTP – Hypertext Transfer Protocol80
HTTPS – Hypertext Transfer Protocol Secure443
SSL VPN – Secure Sockets Layer virtual private network443
Kerberos88
POP3 – Post Office Protocol version 3110
NNTP – Network News Transfer Protocol119
IMAP4 – Internet message access protocol version 4143
SNMP – Simple Network Management Protocol161
SNMP Trap – Simple Network Management Protocol Trap162
LDAP – Lightweight Directory Access Protocol389
ISAKMP (VPN) – Internet Security Association and Key Management Protocol (virtual private network)500
Syslog514
L2TP – Layer 2 Tunneling Protocol1701
PPTP – Point-to-Point Tunneling Protocol1723
RDP – Remote Desktop Protocol3389

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INCLUDES QUESTIONS TO HELP YOU PREPARE

FOR THE NEW PERFORMANCE BASED QUESTIONS 

Bonus - Performance Based Questions

Additional Security+ questions to help you prepare for the new performance based questions. These are included with the full bank of Security+ practice test questions and are divided into different sections. For example, you'll have access to the following links:

- Performance Based Question - Set 1

You'll see a graphic explaining what you might be required to do on the actual exam to match different types of security to mobile devices and servers in a data center. You'll then have two questions that test your knowledge and ability to correctly answer the questions. This question also includes a link to a graphic showing the end solution for the overall performance based question simulation.

- Performance Based Question - Set 2

You'll see a graphic explaining what you might be required to do on the actual exam to match different types of attacks with the name of the attack type. You'll then have five questions that test your knowledge and ability to correctly answer the questions. This question also includes a link to a graphic showing the end solution for the overall performance based question simulation.

- Performance Based Question - Set 3

You'll see a graphic showing a network with computers and servers separated by a firewall. The firewall is used to control traffic between the computers and users using rules within an access control list (ACL).  You'll have three questions that test your knowledge and ability to correctly identify the relevant components of the rule. The incorrect answers and explanation provide you with insight into how to correctly answer this type of question on the actual exam.

- Performance Based Question - Set 4

You'll see a graphic explaining what you might be required to do on the actual exam related to what a forensic analyst would do during an investigation. You'll then have two questions that test your knowledge and ability to correctly answer the questions. This question also includes a link to a graphic showing the end solution for the overall performance based question simulation.

- Performance Based Question - Set 5

You'll see a graphic explaining what you might be required to do on the actual exam to match protocols and ports. You'll then have seven questions that test your knowledge and ability to correctly answer the questions. This question also includes a link to a graphic showing the end solution for the overall performance based question simulation.

- Performance Based Question - Set 6

You'll see a list of security controls along with a graphic showing devices and locations within an organization, along with instructions on what you might be required to do on the actual exam to match the controls with the devices and locations. You'll then have four questions that test your knowledge and ability to correctly answer the questions. This question also includes a link to a graphic showing the end solution for the overall performance based question simulation.

- Performance Based Question - Set 7

You'll see a list of authentication methods and authentication factors along with instructions on what you might be required to do on the actual exam to match the authentication methods with the authentication factors. You'll then have six questions that test your knowledge and ability to correctly answer the questions. This set also includes a link to a graphic showing the end solution for the overall performance based question simulation.

- Performance Based Question - Set 8

You'll see a graphic explaining what you might be required to do on the actual exam to match different types of attacks with the name of the attack type. You'll then have five questions that test your knowledge and ability to correctly answer the questions. This is similar to Set 2 but expands on the possibilities. The set also includes a link to a page showing the end solution for the overall performance based question simulation.

New - Performance Based Question - Set 9

New questions recently added using a different testing engine. See a demo here. This set includes drag and drop and matching questions on ports.

New - Performance Based Question - Set 10

A random set of 20 performance-based questions using drag and drop, matching, sorting, and fill in-the blank. This set includes performance-based questions on RAID.

Get the full bank of Security+ (SYO-401) Practice Test Questions Here

Get the full bank of Security+ Practice Test Questions

Click here if you're looking for SYO-501 Practice Test Questions

Simulated Performance-based Questions

Bonus - Performance Based Questions

Simulated performance-based questions included with all

packages that include practice test questions.

Additional Security+ questions to help you prepare for the new performance based questions. These are included with the full bank of Security+ practice test questions and are divided into different sections. For example, you'll have access to the following links:

- Performance Based Question - Set 1

You'll see a graphic explaining what you might be required to do on the actual exam to match different types of security to mobile devices and servers in a data center. You'll then have two questions that test your knowledge and ability to correctly answer the questions. This question also includes a link to a graphic showing the end solution for the overall performance based question simulation.

- Performance Based Question - Set 2

You'll see a graphic explaining what you might be required to do on the actual exam to match different types of attacks with the name of the attack type. You'll then have five questions that test your knowledge and ability to correctly answer the questions. This question also includes a link to a graphic showing the end solution for the overall performance based question simulation.

- Performance Based Question - Set 3

You'll see a graphic showing a network with computers and servers separated by a firewall. The firewall is used to control traffic between the computers and users using rules within an access control list (ACL).  You'll have three questions that test your knowledge and ability to correctly identify the relevant components of the rule. The incorrect answers and explanation provide you with insight into how to correctly answer this type of question on the actual exam.

- Performance Based Question - Set 4

You'll see a graphic explaining what you might be required to do on the actual exam related to what a forensic analyst would do during an investigation. You'll then have two questions that test your knowledge and ability to correctly answer the questions. This question also includes a link to a graphic showing the end solution for the overall performance based question simulation.

- Performance Based Question - Set 5

You'll see a graphic explaining what you might be required to do on the actual exam to match protocols and ports. You'll then have seven questions that test your knowledge and ability to correctly answer the questions. This question also includes a link to a graphic showing the end solution for the overall performance based question simulation.

- Performance Based Question - Set 6

You'll see a list of security controls along with a graphic showing devices and locations within an organization, along with instructions on what you might be required to do on the actual exam to match the controls with the devices and locations. You'll then have four questions that test your knowledge and ability to correctly answer the questions. This question also includes a link to a graphic showing the end solution for the overall performance based question simulation.

- Performance Based Question - Set 7

You'll see a list of authentication methods and authentication factors along with instructions on what you might be required to do on the actual exam to match the authentication methods with the authentication factors. You'll then have six questions that test your knowledge and ability to correctly answer the questions. This set also includes a link to a graphic showing the end solution for the overall performance based question simulation.

- Performance Based Question - Set 8

You'll see a graphic explaining what you might be required to do on the actual exam to match different types of attacks with the name of the attack type. You'll then have five questions that test your knowledge and ability to correctly answer the questions. This is similar to Set 2 but expands on the possibilities. The set also includes a link to a page showing the end solution for the overall performance based question simulation.

New - Performance Based Question - Set 9

New questions recently added using a different testing engine. See a demo here. This set includes drag and drop and matching questions on ports.

New - Performance Based Question - Set 10

A random set of 20 performance-based questions using drag and drop, matching, sorting, and fill in-the blank. This set includes performance-based questions on RAID.

Get the full bank of Security+ Practice Test Questions Here

Simulated performance-based questions included with

all packages that include practice test questions.

SSCP Ports

The list of SSCP ports is a little easier for me to create. It’s simply all of the ports listed in the previous two tables. The (ISC)2 objectives do not list specific ports that you need to know but instead include the words “Commonly Used Ports and Protocols”. Theoretically, they can ask you about any of the ports but you’re unlikely to see anything other than what is listed here. If you do, please let me know.

Practice Test Question Answer

Q. What port do you need to close to block outgoing email?

A. Port 22

B. Port 25

C. Port 110

D. Port 443

Answer: B

Port 25 is used for SMTP and SMTP is used for outgoing email.

Port 22 is used for SSH, SFTP, and SCP but not for email.

Port 110 is used for POP3 but POP3 is only used for incoming email, not outgoing email.

Port 443 is used for HTTPS, not email.

 

Here are some links to more resources to help you pass the Network+ exam the first time you take it.

Network+ Study Resources

Network+ Study Resources

CompTIA Network+ N10-006 Practice Test Questions (Get Certified Get Ahead) Paperback
  • Includes over 300 realistic practice test questions and a comprehensive list of relevant acronyms
CompTIA Network+ N10-006 Practice Test Questions (Get Certified Get Ahead) Kindle Edition
  • Includes over 300 realistic practice test questions, over 200 flash cards, and a comprehensive list of relevant acronyms.
  • Available for free if you have Kindle Unlimited.
CompTIA N10-006 Network+ Basic Networking Components (A Get Certified Get Ahead Network+ Kindle Short) Kindle Edition
  • Get a solid understanding of the core networking components covered in the CompTIA Network+ N10-006 exam.
  • Available for free if you have Kindle Unlimited.
You don't have to own a Kindle to use any of the Kindle books. Amazon has created free apps for just about any platform. Download and install any of these free apps and you can then read any Kindle book.

1 Comment

  1. I have often wondered why the test prep books don’t provide this concisely on a page. I’m hoping your book is different. But at least the info is here. I believe the next generation of study aids. For these types of wrote memorization exams will provide mneumonic devices for committing the information to memory for easy recall. I have some ideas in this area and I’ll share them it they work for me and others.

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