Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Network + > Chapter 13 > Flashcards

Chapter 13 Flashcards

1
Q

The first line of defense is something called_________ which broadly refers to ways to let people securely access your resources. p432

A

security filtering

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Typically reside on routers to determine which devices are allowed to access them based on the requesting device’s Internet Protocol (IP) address. p432

A

Access Control Lists (ACL)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

When configuring ACLs between the Internet and your private network to mitigate security problems, it’s a good idea to include these four conditions: p433

A

Deny any addresses from your internal networks.
Deny any local host addresses (127.0.0.0/8).
Deny any reserved private addresses.
Deny any addresses in the IP multicast address range (224.0.0.0/4)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

The first is a concept which basically means encapsulating one protocol within another to ensure that a transmission is secure is called. p434

A

tunneling

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

The lion’s share of us use IP, known as a_________ which can be encapsulated within a _________like Internet Protocol Security (IPSec); if you took a look at these packets individually, you would see that they’re encrypted. p434

A

payload protocol

delivery protocol

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is a Virtual Private Network (VPN). p435

A

reason we use a VPN is so that our host will traverse an insecure network (Internet) and become local to the remote network.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What are the three types of VPNs p436

A

Remote access VPNs
Site-to-site VPNs
Extranet VPNs

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

This security protocol was developed by Netscape to work with its browser. p436

A

Secure Sockets Layer (SSL)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

SSL was merged with other Transport layer security protocols to form a new protocol called p436

A

Transport Layer Security (TLS)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is SSL VPN p437

A

is really the process of using SSL to create a Virtual Private Network (VPN). A VPN is a secured connection between two systems that would otherwise have to connect to each other through a non-secured network.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is L2TP p437

A

Layer 2 Tunneling Protocol (L2TP), which was created by the Internet Engineering Task Force (IETF). It comes in handy for supporting non-TCP/ IP protocols in VPNs over the Internet.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is Point to Point Tunneling Protocol (PPTP) p437-38

A

PPTP is a VPN protocol that runs over port 1723 and allows encryption to be done at the Application (data) level.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

PPTP acts by combining an unsecured Point to Point Protocol (PPP) session with a secured session using the what? p438

A

Generic Routing Encapsulation (GRE) protocol

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

GRE tunnels have the following characteristics. p439

A

Uses a protocol-type field in the GRE header so any layer 3 protocol can be used through the tunnel
Stateless and has no flow control
Offers no security
Creates additional overhead for tunneled packets at least 24 bytes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What is IPSec p439

A

IP Security (IPSec) was designed by the IETF for providing authentication and encryption over the Internet. It works at the Network layer of the OSI model (Layer 3) and secures all applications that operate in the layers above it.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What are the two major protocols working in IPSec. p439

A 
Authentication Header (AH)
Encapsulating Security Payload (ESP)
17
Q

The AH protocol within IPSec is compatible with networks running Network Address Translation (NAT). T/F p439

A

False

18
Q

This protocol real value is it’s ability to provide a framework for safely transferring key and authentication data independent of the key generation technique encryption algorithm and authentication mechanism. p440

A

(ISAKMP) Internet Security Association and Key Management Protocol

19
Q

Contains information required to execute security services such as header authentication and payload encapsulation. p440

A

(SA) Security Association

20
Q

Encryption works by running the data through a special encryption formula called what?p441

A

Key

21
Q

IBM came up with a most widely used standard called what? p442

A

Data Encryption Standard (DES)

22
Q

This standard encrypts three times and it allows us to use one,two or three separate keys. p442

A

Triple Data Encryption Standard (3DES or TDES)

23
Q

Three-key TDES has a key length of 168 bits (56 times 3) but due to a complex type of attack known as? p442

A

meet-in-the-middle

24
Q

NIST stands for what? p442

A

National Institute of Standards and Technology (NIST)

25
Q

Instead of going after the cipher directly they attempt to gather the information they want from the physical implementation of a security system. p443

A

Side channel attack

26
Q

If the original sender doesn’t have a public key the message can still be sent with a digital certificate that’s often called a what? p443

A

Digital ID

27
Q

Three scientists from MIT formed a commercial company in 1977 to develop asymmetric keys and nailed several US patent. what was the name of there encryption software. p444

A

Rivest Shamir and Adleman (RSA)

28
Q

This is not a protocol but refers to the combination of hardware and software required to make a remote-access connection. p445

A

Remote Access Service (RAS)

29
Q

Allows users to connect to a computer running Microsoft’s Remote Desktop Services but a remote computer must have the right kind of client software installed. p446

A

Remote desktop protocol (RDP)

30
Q

After establishing a connection the user sees a ________that’s basically a preconfigured window that looks like window. p446

A

Terminal window

31
Q

What is SSH? p447

A

Secure Shell is a network protocol that is designed as an alternative to command-based utilities such as Telnet that transmit requests and responses in clear text.

32
Q

What is ICA? p447

A

Is a protocol designed by Citrix System to provide communication between servers and clients.

33
Q

What is PPP (PTP)? p446

A

Is a Layer 2 protocol that provides authentication encryption and compression services to clients logging in remotely.

34
Q

What is PPPoE? p446

A

Is an extension of PPP. Its purpose is to encapsulate PPP frames within Ethernet frames.

35
Q

Service providers offering customers high-speed access using ________ or cable modems needed a way to offer the authentication and encryption services of PPP. p446

A

Asymmetric Digital Subscriber Line (ADSL)

Network + (20 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions