Check Point
  • 13 Jun 2024
  • 4 Minutes to read
  • Contributors

    Check Point

      Article summary


      This guide will guide you through the steps needed to establish a Site-to-Site VPN tunnel between your Harmony SASE network and your Check Point environment.

      Breakdown of topics

      1. Pre-requisites
      2. Configuration Steps
      3. Verifying the Setup
      4. Troubleshooting
      5. Support Contacts


      To successfully follow this guide, ensure that:

      1. You have an active Harmony SASE account and network.
      2. The Harmony SASE app is installed on your devices.
      3. An active Check Point account with administrative permissions is accessible.

      Configuration Steps

      Creating a gateway object in the Check Point Smart Console

      1. Open the Check Point Smart Console.
      2. Go to Security Policies.
      3. Add Harmony SASE Gateway as an object as shown in the image below. Please make sure you have your gateway IP (which can be found in the Network tab in your Management Platform).


      Adding the Harmony SASE gateway IP and remote subnet

      1. Open the Harmony SASE object you created.
      2. Go to Topology.
      3. Select New at the top.
      4. Under the General tab, fill in Name, IP Address, and Net Mask.
      5. Add Harmony SASE remote subnet as IP Address.
      6. Add "" as Net Mask.
      7. Open the Topology tab. Select the Network defined by the interface IP and Net Mask.
      8. Select OK.
      9. Go to Topology.
      10. Select New at the top.
      11. Under the General tab, fill in Name, IP Address, and Net Mask.
      12. Add Harmony SASE gateway IP as IP Address.
      13. Add "" as Net Mask.
      14. Open the Topology tab. Select External (leads out to the internet).
      15. Select OK.

      Creating a VPN Star community

      1. Create a new Star Community.


      2. Fill in the following information:

      • Specify an Object Name of your own choice.
      • Add your external Firewall IP as Center Gateway.
      • Add your Harmony SASE gateway as Satellite Gateways.
      1. Go to Shared Secret.
      2. Add a Shared Secret and write it down as it will also be used in configuring the tunnel at the Management Platform. Please note: Check Point recommends choosing a shared secret that contains at least 20 characters.


      5. Go to Encryption and set IKE Security. Note that you'll need to set these exact preferences while configuring the tunnel at the Management Platform.

      1. Go to Tunnel Management.
      2. Set VPN Tunnel Sharing to One VPN tunnel per Gateway pair.


      The remote subnets you defined need to match exactly to the remote subnets entered within the Harmony SASE side (if additional subnets are added, it can cause the tunnels to break from time to time).
      1. Go to Advanced.
      2. In the IKE (Phase 1) section, set the Renegotiate IKE security associations every (minutes) to 480.
      3. In the IPsec (Phase 1) section, set the Renegotiate IPsec security associations every (seconds) to 3600.
      4. Click OK.

      Additional settings in Check Point Smart Console

      1. Under Check Point firewall policy, add a rule for any to any, in and out to (this may vary if you did not set the default subnet during Harmony SASE network creation).
      2. Create a Network group with All local networks to be trusted with the VPN tunnels.
      3. Publish and Install Policy.

      Configuring the tunnel in the Management Platform

      1. Access the Harmony SASE Administrator Portal and click Networks.
      2. Go to the gateway in your network from which you want to create the tunnel to Check Point, select the three-dotted menu (...) beside it, and select Add Tunnel.
      3. Select IPSec Site-2-Site Tunnel and select Continue
      4. Select Single Tunnel, and click Continue.
      5. In the General Settings section, specify these:
        1. Name - Name for the tunnel.
        2. Shared Secret - Secure pre-shared key.
        3. Public IP - Public or Egress IP address of Check Point Firewall.
        4. Remote ID - Public or Egress IP address of Check Point Firewall. 
        5. Harmony SASE Gateway Proposal Subnets - Leave Any ( selected here.
        6. Remote Gateway Proposal Subnets - Leave Any ( selected here.

      6. In the Advanced Settings section, enter these:
        • IKE Version: V2
        • IKE Lifetime: 8h
        • Tunnel Lifetime: 1h
        • Dead Peer Detection Delay: 10s
        • Dead Peer Detection Timeout: 30s
        • Encryption(Phase 1): aes256
        • Encryption(Phase 2): aes256
        • Integrity (Phase 1): sha256
        • Integrity (Phase 2): sha256
        • Diffie-Hellman Groups (Phase 1): 14
        • Diffie-Hellman Groups (Phase 2):14
          Make sure to verify the tunnel settings under section 3 in the configuration.
      7. On your network select your three dots and click on Routes Table:
      8. Click the Add Route button on the top right, then on this popup fill out accordingly (Tunnel will match the name above, and Subnets will be the subnets you want to reach on the Check Point Configuration of the tunnel) and click the Add Route button:
      9. Be sure to click Apply Configuration when done.

      Verifying the Setup

      After following the above steps, your tunnel should be active.
      To verify, go to your Harmony SASE dashboard, locate the tunnel you just created, and check the tunnel status.
      It should indicate that the tunnel is "Up", signifying a successful connection.
      Next, connect to your network using the Harmony SASE agent and attempt to access one of the resources in your environment.


      If you encounter issues during or after the setup, try reviewing your settings to ensure everything matches the instructions. In particular, check the IP addresses and other details you entered during setup. If issues persist, please consult our dedicated support.

      Support Contacts

      If you have any difficulties or questions, don't hesitate to contact Harmony SASE's support team. We offer 24/7 chat support on our website at, or you can email us at We're here to assist you and ensure your VPN tunnel setup is a success

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