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9.5 Example of IPSec Configuration
9.5.1 Networking requirement
A company uses W15E to deploy a network for both of headquarter and branch offices. Employees from branch
offices need to access the headquarter resources over internet anytime, and the resources include internal
materials, OA system, ERP system, CRM system and project management system, and so on.
9.5.2 Solution
It is recommended that the VPN service of the router be used to address this requirement. IPsec is taken as the
example to explain the configuration.
The following figure shows the topology.
9.5.3 Configuration procedure
Assume that the IPSec tunnel information of the two routers is as follows:
Key Negotiation Method: Auto Negotiation
Pre-shared Key: 12345678
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