Firewalls

Question 1

A firewall can be either
S_______ or H________.

Answer 1

Software
Hardware

Question 2

Firewall is a system that is designed to prevent _____________ ______ from entering a private network, by _________ the information that comes in from the internet.

Answer 2

Unauthorized access,
Filtering

Question 3

A firewall blocks ________ _______ and permits ________ traffic

Answer 3

Unwanted traffic,
Wanted

Question 4

So basically, a firewall filters the incoming network ____ _______ , and determines by its _______ _____, if it is allowed to enter the network.

Answer 4

Data packets, access rules

Question 5

In todays high-tech world, a firewall is _________ to every business to keep their ________ safe.

Answer 5

Essential, network

Question 6

One way that a firewall controls the flow of traffic coming into and out of a network, is through its _______ _______ ____ or (___)

Answer 6

Access control list (ACL)

Question 7

ACL is a ____ of _____ on what can access the ________.

Answer 7

List, rules , network

Question 8

ACL either _______ or _______ permissions.

Answer 8

Allows , Denies

Question 9

Most firewalls come with a default rule of ________ ____, what that basically means is that the firewall will only allow _______ to enter the network that the ___ specifically says that it will _____.

Answer 9

Implicit deny, traffic , ACL , allow

Question 10

Firewalls come in different types, and one type is called a ____ ______ ________.

Answer 10

Host based firewall

Question 11

Host based firewall is a _________ firewall.

Answer 11

Software

Question 12

Host based firewall is the type of firewall that is installed on a _________, and it protects that computer ____ and nothing else.

Answer 12

Computer, only

Question 13

Later versions of Microsoft operating systems come pre-packaged with a ____ _____ _______. You can turn the firewall on or off if you want, and you can also create exceptions to the firewall based on the application name on the _________ tab.

Answer 13

Host based firewall, exceptions

Question 14

Of course , you can always purchase a _____-_____ firewall, and install it on your computer.

Answer 14

Third-party

Question 15

A network based firewall, is a combination of ________ and ________. And it operates at the network _____, it is placed between a _______ network and the internet.

Answer 15

Hardware, and software
Layer
Private

Question 16

Unlike a host based firewall, where it only protects its own computer, a network based firewall protects an ______ network.

Answer 16

Entire

Question 17

Network based firewall protects an entire network through __________ rules that is applied to the entire network, so that any harmful activity can be _______, before it reaches the __________.

Answer 17

Management, stopped, computers

Question 18

Firewalls inspect traffic in a couple of ways
(What are the two ways?)

Answer 18

-Stateful
-Stateless

Question 19

Stateful firewall, monitors all the connections and ____ ______ that are passing through, and keeps a ______ of it.

Answer 19

Data streams, record

Question 20

Stateless firewall, uses an ___ to allow or deny traffic.

Answer 20

ACL

Question 21

Content filtering is a technology that is commonly used in _____.

Answer 21

Email

Question 22

As the name content filtering implies, it filters data based on their _______, and not on the ______.

Answer 22

Content , source

Question 23

(Content Filtering) This type of filter is commonly used to filter ______ ____.

Answer 23

Email spam

Question 24

And another type of filter is called s__________ I____________.

Answer 24

Signature identification

Question 25

Signature identification is used to detect _______ that have a well-known ________ pattern.

Answer 25

Viruses, behavior

Question 26

Certain viruses and _______ have a common behavior, and firewalls that use ___________ ____________ are programmed to spot this behavior. And once it’s spotted it takes action to _____ the intruder

Answer 26

Malware, signature, identification, block

Question 27

Intrusion detection or prevention system (IDS/IPS) is a hardware tool that is typically placed between the ________ and the ________.

Answer 27

Internet , firewall

Question 28

IDS/IPS job is to alert and prevent a network from _______ ______.

Answer 28

Outside attacks

Question 29

IDS/IPS monitors traffic flowing through a _______, looking for suspicious patterns. If it finds any, alerts the network ____________ of a pending danger.

Answer 29

Network, administrator