Create a VPN IPSEC connection on ubuntu server

Hi, I need to create (and understand how it is done) a VPN connection on a test server and then on my production server. The VPN connection needs to be done via a virtual ethernet because it is on a web server. If we can work via team viewer it would be great. I am attaching the details. Thanks, Michael ## Deliverables Here are the connection details provided by the VPN provider. =============================================== IP sec tunnel endpoint: will be given Common IPSEC Parameters Phase 1 - IKE Policy Definition (IPSEC/ISAKMP) IKE Mode Main Message Encryption Algorithm: 3des-cbc Message Integrity (Hash) Algorith: ah-sha-hmac Peer authentigateon method: pre-shared Peer authentication key: will be given Key exchange DH group identifier: 2 (1024 bits) ISAKMP policy Lifetime (sec): 86400 (1 day) ISAKMP Keepalives Supported / Optional Dead Peer Detection (DPD) Supported / Optional (Recom. Phase 2 - Transform Set (Security Association) IPSec Mode: Tunnel IPSec SA Lifetime (sec): 3600 (1 hour) Perfect Forward Secrecy (PFS) No IKE Mode quick Mechanism for Header Authentication(AH): none Mechanism for Payload Authentication(ESP): esp-sha-hmac Mechanism for Payload Encryption (ESP): esp-3des-cbc Encryption none IPSEC Packet Fragmentation Pre-Fragmentation ==============================================