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VPN Site-to-Site

    VPN Site-to-Site Configuration between Openstack portal and VMW
    VPN Site-to-Site Configuration between Openstack portal and VMW
    Updated on 16 Dec 2025

    In this example, we will create a VPN Site-to-Site connection with the parameters shown in the topology below.

    file

    Step 1: Configure VPN_AAS on Openstack

    Access and create a VPN Site-to-Site on https://console.fptcloud.com

    -Tạo Customer Gateway

    +Remote IP public: is the floating IP of the VPN gateway VMW

    +Remote private network: is the Lan Subnet sequence that needs to be peered by VMW file

    • Create a VPN Connection With the parameter "Pre-shared key" that needs to be saved to be filled in when initiating a VPN Connection on VMW.

    The specifications of VPN Connection will include 3 main sections:

    • General information (contains general information of the VPN connection)
    • Remote VPN Information (contains encryption information and customer information)
    • Dead Peer Detection (the number of times the system automatically retries to connect when there is a problem)

    Section 1: General information

    file

    Section 2: Remote VPN information

    file

    If you select Providers = "others", then follow these steps:

    • Step 1: Fill up providers name = "VMWare"

    • Step 2: Fill in the information for IKE and IPSec, specifically as follows:

    For IKE:

    • Encryption algorithm: aes-256
    • Authorization algorithm: sha256
    • IKE version: ikev2
    • Lifetime units: seconds
    • Lifetime value: 28800
    • DH Group: GROUP_14
    • Phase1 negotiation mode: main

    For IPsec:

    • Encapsulation mode: tunnel
    • Encryption algorithm: aes-256
    • Authorization algorithm: sha256
    • Lifetime units: seconds
    • Lifetime value: 3600
    • Perfect forward secrecy (PFS): GROUP_14
    • Transform protocol: esp

    Section 3: Dead Peer Detection file

    After filling in all the information, please select "Create VPN Connection"

    Step 2: Configure VPN_AAS on VMWare Cloud

    -Go to the VMWare system to set up, then click Next. file -In the Peer Authentication tab, with the Pre-shared key parameter, enter the key you have created in OSP, then click Next. file

    • Enter the Endpoint Configuration fields file
    • After creation, select Customize Security Profile to edit the IKE policy, IPSec policy to match the IKE policy, IPSec policy created in OSP. file
    • Select View statistics, to check the connection status. If the display status is UP, → have successfully connected between the 2 sites.file file file Step 3: Check the connection Ping from VM OPS -> VM VMWare file Ping from VM VM WMare-> VM OSP file