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How To Setup a Site-to-Site VPN with Cisco Remote Gateway Technical Level

VPN Setup

Part 1: Configuring the Cisco Gateway Object

To create the Cisco Gateway Object:

1. Right-click: Network Objects > Interoperable Device…

2. In the General Properties dialog box, enter a Name for the Gateway, IP address and description (optional).

Note - Use the external routable IP address of the Cisco peer for the IP.

3. Click "OK".

Part 2: VPN Community Setup

1. Select the IPSec VPN tab.

2. Right-click on the New... -->Star Community...

Part 3: VPN Community Configuration

To configure the VPN:

1. Name the VPN Community.

2. Click Center Gateways.

3. Click Add.

4. Select the local Check Point Security Gateway object.

5. Click "OK".

6. Click Satellite Gateways.

7. Click Add.

8. Select the previously named Cisco peer gateway object in Part 1.

9. Click "OK".

10. Click VPN Properties.

Note - You can change the Phase 1 and Phase 2 properties  here. Note the values you select, because the peer will need to match these values.

Part 4: To Configure VPN Tunnel

You can define the Tunnel setup in the Tunnel Management option. One VPN tunnel per subnet pair is the recommended tunnel sharing method. This shares your network on either side of the VPN, makes the phase 2 negotiation easier, and requires fewer tunnels to be built for the VPN.

You can restrict access on the VPN through your security rulebase. (Part 9)

Note - Permanent tunnels can only be set up between Check Point gateways.

1. Click Tunnel Management to configure the tunnel.

Part 5: To Configure the Shared Secrets

1. Click Advanced Settings

2. Click Shared Secret

3. Select Use only Shared Secret for all External members

4. Select your peer gateway in the list

5. Click Edit to edit the shared secret.

 Note - Remember this secret because your peer will need it to set up the VPN on the other end.

Part 6: To Modify Phase 1 and Phase 2 Advanced Settings

1. Click Advanced VPN Properties

Keep note of these values to ensure they match on the peer gateway side of the configuration.

Note - It is recommended that you select Disable NAT inside the VPN community to access resources behind your peer gateway using their real IP addresses and vice versa.

2. Click OK to exit back to the SmartDashboard.

Note - You may see the following message: At least one of the VPN Community members does not have the VPN domain defined. Are you sure you want to continue? 

3. Click Yes to view your defined VPN community

Part 7: Defining the VPN Domain

Make sure you have Network Objects to represent the local networks and the Cisco peer networks that will be sharing with you.

To Define the VPN Domain:

1. Right-click Networks

2. Select Network

In the Network Properties window, enter the properties of the Cisco peer internal network.

Note: When many networks are shared on either end of the tunnel, it is recommended to create different groups to represent the domains on either side of the VPN tunnel.

To create a Group:

1. Right click Groups

2. Select Groups>Simple Group

This example shows one shared network, and there is one object in the group. There is no limit to the number of networks that can be shared. Important - Adding groups within a group can impact network performance. Make sure the group is "flat".

4. Add a second group for the Peer Device:

Part 8: VPN Domain Configuration

Setting the VPN domains for each gateway:

1. Open the Properties for your local Check Point gateway object.

2. Click Topology in the VPN Domain area.

3. Select Manually defined

4. From the list, select <local VPN domain group object>.

5. Click OK and open the Properties for the Cisco gateway.

6. Select the group/network that represents the VPN domain.

7. Click OK

Part 9: Rules for Traffic

After you setup the objects, the VPN, and the community, set up Rules to control flow of traffic to allow and restrict access to the VPN.

Setting a Rule

To setup a Rule:

1. Right click above the number in the rule column where you want the rule to be set.

2. Select Add Rule>Below

In the example below, the Rule allows any service across the tunnel in both directions.

Part 10: Setting VPN Community in the Rule

To set the VPN community in the VPN column of the Rule:

1. Right click the Any Traffic icon.

2. Select Edit Cell.

3. Select Only connections encrypted in specific VPN Communities.

4. Click Add.

5. Select the VPN community.

6. Click OK.

7. Click OK again.

The Rule appears in the VPN column.

Final Step

Install the policy to the local Check Point gateway. The VPN is setup!

After the Cisco remote side sets up their VPN to match, a secure communication with their site is established.


Refer to this document:

How To Set Up a Site To Site VPN with a Cisco Remote Gateway

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