Module 18: VPNs Flashcards
What is a VPN
A Virtual Private Network
How does a VPN keep data private?
Is encrypts the packets
Benefits of VPNS
Cost Savings
Security
Scalability
Compatibility
What is a Site to Site VPN
Traffic is only encrypted between the two devices
What is a Remote Access VPN
VPN using TLS or IPSEC
What is IPsec
a group of protocols that are used together to set up encrypted connections between devices
What security functions does IPsec provide?
Confidentiality
Integrity
Origin Authentication
Diffie Hellman
What is IPsec Protocol Encapsulation
It encapsulates the packets using authentication headers or ESP it provides both confidentiality and authentication
How is confidentiality achieved in IPsec
Encrypts data using a symmetrical key - AES or DES
How is data integrity achieved in IPsec
Using HMAC’s
How is Authentication achieved in IPsec
Using Pre-shared Keys
How is the key securely exchanged in IPsec
Using Diffie-Hellman
What are the two types of VPN’s
Site to Site
Remote Access
What is Hair Pinning
a feature that lets a VPN client send IPsec-protected traffic to another VPN user by allowing such traffic in and out of the same interface.
Spoke to Spoke VPN
What is Split Tunnelling
Where traffic is sent of in 2 directions by the VPN
