3.3 VPN

Question 1

Explain what a VPN is.

Answer 1

A VPN extends a private network across a public network, enabling users and devices to send and receive data across share or public networks as if their computing devices were directly connected to the private network.

Question 2

Explain Always On Mode (VPN)

Answer 2

A low-latency point-to-point connection between two sites. * A tunnel between two gateways that is “always connected”

Question 3

Explain L2TP/IPSec (VPN).

Answer 3

This is the most secure tunneling protocol that can use certificates, Kerberos authentication, or a pre-shared key.
L2TP/IPSec provides both a secure tunnel and authentication.

Question 4

Explain SSL VPN.

Answer 4

Works with legacy systems and uses SSL certificates for authentication.

Question 5

Explain HTML 5 VPN

Answer 5

Similar to the SSL VPN, as it uses corticates for authentication.

easy to set up and you just need an HTML5-compatible browser such as Opera, Edge, Firefox, or Safari.

Question 6

Explain Split tunnel vs Full tunnel

Answer 6

Full tunnel means using VPN for all traffic, both to the internet and corporate network.

Split tunnel uses VPN for traffic destined for the corporate network only, and internet traffic direct through its normal route.

Question 7

Explain Remote access vs Site-to-Site

Answer 7

In site-to-site, IPSec site-to-site VPN uses an always on mode where both packet header and payload are encrypted. IPSec tunnel mode

In a remote access scenario, a connection is initiated from a users PC or laptop for a connection of shorter duration. IPSec transport mode