Which mode of IPSec should you use to assure security and confidentiality of data within the same LAN? Answer B is correct.
ESP transport mode
should be used to ensure the integrity and confidentiality of data that is exchanged within the same LAN.
Which IPsec mode is more secure?
When to Use
IPsec Tunnel Mode
Tunnel mode
is most commonly used for configurations that need a secure connection between two different networks, separated by an intermediate untrusted network (like the Internet).
When should I use IPsec tunnel mode?
IPSec Transport mode is used
for end-to-end communications
, for example, for communication between a client and a server or between a workstation and a gateway (if the gateway is being treated as a host). A good example would be an encrypted Telnet or Remote Desktop session from a workstation to a server.
Is tunnel mode or transport mode more secure?
Transport mode:
MSS is higher
, when compared to Tunnel mode, as no additional headers are required. The transport mode is usually used when another tunneling protocol (such as GRE, L2TP) is used to first encapsulate the IP data packet, then IPsec is used to protect the GRE/L2TP tunnel packets.
What is the difference between IPsec transport mode and tunnel mode?
The key difference between transport and tunnel mode is
where policy is applied
. In tunnel mode, the original packet is encapsulated in another IP header. … In transport mode, the IP addresses in the outer header are used to determine the IPsec policy that will be applied to the packet.
What are the two modes of IPsec?
The IPsec standards define two distinct modes of IPsec operation,
transport mode and tunnel mode
. The modes do not affect the encoding of packets. The packets are protected by AH, ESP, or both in each mode.
What is IPsec biggest limitation?
One of the greatest disadvantage of IPSec is
its wide access range
. Giving access to a single device in IPSec-based network, can give access privileges for other devices too.
What is the purpose of IPsec?
IPsec is used for
protecting sensitive data
, such as financial transactions, medical records and corporate communications, as it’s transmitted across the network. It’s also used to secure virtual private networks (VPNs), where IPsec tunneling encrypts all data sent between two endpoints.
Is IPsec a TCP or UDP?
TCP, the Transmission Control Protocol, sets up dedicated connections between devices and ensures that all packets arrive. UDP, the User Datagram Protocol, does not set up these dedicated connections.
IPsec uses UDP
because this allows IPsec packets to get through firewalls.
What are the 3 protocols used in IPsec?
These protocols are called
Authentication Header (AH) and Encapsulated Security Payload (ESP)
. AH provides authentication, integrity, and replay protection (but not confidentiality).
What is the main disadvantage of tunnel mode?
First, it relies
on the security of your public keys
. If you have poor key management or the integrity of your keys is compromised then you lose the security factor. The second disadvantage is performance.
What mode is IP security Mcq?
Explanation:
IPSec
is a set of protocols used to provide authentication, data integrity and confidentiality between two machines in an IP network. In the TCP/IP model, it provides security at the IP layer i.e. the network layer.
Which is better Tunnel or Transport mode?
Transport mode
:
MSS is higher, when compared to Tunnel mode, as no additional headers are required. The transport mode is usually used when another tunneling protocol (such as GRE, L2TP) is used to first encapsulate the IP data packet, then IPsec is used to protect the GRE/L2TP tunnel packets.
What is the difference between VPN and IPSec?
IPsec specifies ways in which IP hosts can encrypt and authenticate data being sent at the IP network layer. IPsec is used to create a secure tunnel between entities that are identified by their IP addresses. … However,
VPNs use encryption to obscure all data sent
between the VPN client and server.
What is Phase 1 and 2 IPSec VPN?
Phase 1 Security Associations are used to protect IKE messages that are exchanged between two IKE peers
, or security endpoints. Phase 2 Security Associations are used to protect IP traffic, as specified by the security policy for a specific type of traffic, between two data endpoints.
What is VPN tunnel mode?
Tunnel Mode is
a method of sending data over the Internet where the data is encrypted and the original IP address information is also encrypted
. … The Internet Security (IPsec) protocol uses ESP and Authentication Header (AH) to secure data as it travels over the Internet in packets.
