A security engineer wants to implement a site-to-site VPN that will require SSL certificates for mutual authentication.
Which of the following should the engineer implement if the design requires client MAC address to be visible across the tunnel?
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A. B. C. D.D.
Option D, SSL VPN, should be implemented in this scenario.
A site-to-site VPN is used to connect two or more networks securely over the internet. It enables communication between networks as if they were directly connected over a private network. In this scenario, the security engineer wants to implement a site-to-site VPN that requires SSL certificates for mutual authentication. SSL VPNs use SSL/TLS protocols to provide secure remote access to resources, including web applications and network resources.
To achieve mutual authentication, SSL VPN requires both the client and server to present valid SSL certificates. The SSL certificate is a digital certificate that validates the identity of the parties involved in the connection. This ensures that the traffic is encrypted and secure. Therefore, option D, SSL VPN, is a good choice for this scenario.
Regarding the requirement of client MAC address visibility, SSL VPN can provide this information using a feature called "IPsec over SSL VPN." This feature allows SSL VPN to use IPsec to encrypt traffic between the client and the VPN gateway. IPsec provides features such as confidentiality, data integrity, and authentication. It can also support the transmission of the MAC address information between the VPN client and the VPN gateway.
Option A, Tunnel mode IPSec, and Option B, Transport mode VPN IPSec, are IPSec-based VPNs, which provide a secure tunnel between two endpoints, but do not use SSL/TLS protocols. They use IPSec protocols to encrypt traffic between the endpoints, and the mutual authentication is based on pre-shared keys or digital certificates. These protocols do not provide client MAC address visibility across the tunnel.
Option C, L2TP (Layer 2 Tunneling Protocol), is a tunneling protocol that allows the creation of virtual private networks ( VPNs). It does not use SSL/TLS protocols but provides encryption, authentication, and integrity for the transmitted data. However, it also does not support the transmission of the MAC address information between the VPN client and the VPN gateway.
Therefore, SSL VPN is the best option for this scenario, as it provides mutual authentication using SSL/TLS protocols and supports the transmission of the client MAC address information across the VPN tunnel.