COMPUTER THREATS SECURITY
WHAT IS A FIREWALL IN NETWORK SECURITY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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PPTP
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L2F
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L2TP
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IPsec
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Detailed explanation-1: -L2TP does not provide encryption on its own. Hence it is always paired with IPSec. L2TP offers better security if it uses AES cipher. L2TP/IPSec is easy to configure.
Detailed explanation-2: -Layer 2 VPNs are a type of Virtual Private Network (VPN) that uses MPLS labels to transport data. The communication occurs between routers that are known as Provider Edge routers (PEs), as they sit on the edge of the provider’s network, next to the customer’s network.
Detailed explanation-3: -A Layer 2 Virtual Private Network (VPN) emulates a physical sub-network in an IP or MPLS network, by creating private connections between two points. Building a L2VPN network requires coordination between the service provider and customer. The service provider establishes Layer 2 connectivity.
Detailed explanation-4: -Layer 2 VPNs virtualize the datalink layer (Layer 2) so as to make geographically remote sites look as if they were operating in the same LAN network. Layer 3 VPNs virtualize the network layer (Layer 3) so as to route your customer networks over a public infrastructure like Internet or Service provider backbone.