IPSEC VPN CHAPTER 1 VPN (Virtual Private Network)

Consider a company named xyz who have offices across India .

Now Connecting offices across Different locations we need to go for

• WAN technologies  

When we talk about WAN we would consider

• Leased Lines

But the issue with Leased line (which are very secure) is

• Cost  which is very high

Solution to is that we can use

• Internet connectivity to connect offices across different locations.

But the

• Challenge – To transfer Private traffic on Public/ shared network 

• Solution – VPN

VPN (Virtual Private Network)

• Allow the users to send private data over public / shared network securely .

• Provide data confidentiality and data integrity

• Lower operational cost .

• Examples – IPSec VPN , MPLS VPN etc.   
                                                                                                                                                                               
VPN TYPES

• Site to Site VPN – Allows HQ to connects to remote sites offices.

• Remote VPN-Allows remote users to access the corporate network securely.  

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