Implementation of IPsec-VPN Tunneling using GNS3

Virtual private networks (VPN) provide remotely secure connection for clients to exchange information with company networks. This paper deals with Site-to-site IPsec-VPN that connects the company intranets. IPsec-VPN network is implemented with security protocols for key management and exchange, authentication and integrity using GNS3 Network simulator. The testing and verification analyzing of data packets is done using both PING tool and Wireshark to ensure the encryption of data packets during data exchange between different sites belong to the same company.