Push to SIEM

If you already have a <CA>.key file and a <CA>.pem file, then skip this step.

Skip this step if any of these is correct:

• You use TLS, not mutual TLS encryption.

• You already have a <CA>.key file and a <CA>.pem file.

If you do not have a <CA>.key file and a <CA>.pem file, follow one of these procedures to prepare your organization's domain certificate:

Create a new domain certificate

1. On your computer, in OpenSSL CLI, generate a Client CA:

   1. Create the <CA>.key file:

      openssl genrsa -out <CA>.key 2048

   2. Create <CA>.pem file:

      openssl req -x509 -new -nodes -key <CA>.key -sha256 -days 825 -out <CA>.pem

2. On your computer, in the OpenSSL CLI, create a certificate for the SIEM server:

   1. Create a key for the SIEM server:

      openssl genrsa -out <SERVER>.key 2048

   2. Generate a .csr file for the SIEM server:

      openssl req -new -key <SERVER>.key -out <SERVER>.csr

   3. Generate a Client Certificate (.crt) file for the SIEM server. To do this, sign the .csr file using your organization's CA:

      openssl x509 -req -in <SERVER>.csr -CA <CA>.pem -CAkey <CA>.key -CAcreateserial -out <SERVER>.crt -days 825 -sha256

3. Install your SIEM server certificate, SIEM server key, and the CA on your SIEM server (for example, Splunk, Syslog, or QRadar).

4. In the configuration of the SIEM server, define the <CA>.pem file as a trusted certificate.

Use an existing domain certificate

If you already have a .pfx file, then use this method.

Prerequisites:

• The .pfx file that contains the <CA>.key file and the <CA>.pem file.

• The passphrase of the .pfx file.

Note - For OpenSSL 3.x users: If you get an error when extracting from a .pfx file, add the -legacy flag in bash: openssl pkcs12 -in <CERTIFICATE>.pfx -out <CA>.pem –noenc -legacyopenssl pkcs12 -in <CERTIFICATE>.pfx -nocerts -out <CA>.key -legacy To verify your OpenSSL version and available providers, run this command in bash: openssl versionopenssl list -providers If only the default provider is listed, the -legacy flag is required.

Procedure

Do these steps in OpenSSL CLI on your computer:

1. Extract the <CA>.pem file from the .pfx file:

   openssl pkcs12 -in <CERTIFICATE>.pfx -out <CA>.pem –noenc

2. Extract the <CA>.key file from the .pfx file:

   openssl pkcs12 -in <CERTIFICATE>.pfx -nocerts -out <CA>.key

3. Remove the passphrase from the <CA>.key file:

   openssl rsa -in <CA>.key -out <my-key-nopass>.key

On your SIEM server, open a dedicated port to receive logs from Check Point Portal.

A Destination object in the Check Point Portal defines a connection between the Check Point Portal and a SIEM server.

After you configure a Destination for your SIEM server, you can review, edit, search, and delete the destination(s) in the Manage Destinations window. For more information, see Managing Destinations.

1. In the Check Point Portal, click > Event Forwarding.

2. Click Create Destination or Manage Destinations.

   The New Destination window opens.

3. From the Forwarding method list, select Push to SIEM.

4. Enter a name for the destination.

5. From the list, select a SIEM server.

6. In the Host field, enter the address of the SIEM server as an FQDN.

7. In the Port field, enter the port to use for the SIEM server.

   Note - Below the Port field, default configurations appear. You cannot change these configurations: Protocol - The communication protocol. Currently, only TCP is supported. Encryption - The encryption protocol. You can select TLS or mutual TLS.

8. Click Next.

   The Certificates tab opens.

For this step, keep the Certificates tab of the Check Point Portal open and the SIEM server active. Then, follow the workflow:

• For mutual TLS encryption, follow the numbered workflow in the Certificates tab.

• For TLS encryption, skip to Step 3 to upload your CA certificate.

1. Client Certification Sign Request (.csr file)

   1. In the Check Point Portal, click Certificate Sign Request.

      Your web browser downloads the Check Point Portal's .csr file to your computer.

   2. On your computer, use the OpenSSL command line to open the .csr file.

   3. On your computer, use the openssl x509 command to sign the downloaded Client Certificate. To do this, it is necessary to enter your private and public keys.

      Note - Make sure you are in the same working folder as the <CA>.key and <CA>.pem files.

      openssl x509 -req -in <CERTIFICATE>.csr -CA <CA>.pem -CAkey <CA>.key -CAcreateserial -out <YOUR-CERTIFICATE>.crt -days 825 -sha256

2. Client Certificate (.crt file) - In the Check Point Portal, click Browse and upload the signed Client Certificate (.crt file).

   Best Practice - For a more secure connection, Check Point recommends to also upload the signed Client Certificate (.crt file) to your SIEM server.

3. Certificate Authority (CA) certificate (.pem file) - Click Browse and upload the CA certificate (<CA>.pem).

4. Test Connectivity - Click Test Connectivity.

   This test allows you to confirm that the server communicates with Event Forwarding and that Event Forwarding is not impersonated by an attacker.

   Important - In a first-time configuration, you must do a successful test before you can continue configuring Event Forwarding.

If the connection is successful, then Connect successfully appears.

If the connection is not successful, refer to sk182879 - Check Point Portal Event Forwarding - Troubleshooting.

5. Click Finish.