STEPS TO SECURE THE SAP GATEWAY SERVER

Here are the steps you can take to secure your SAP Gateway Server:

1. Activate Gateway logging:

The first step is to activate Gateway logging. This will allow you to track and monitor all activity on the server, which will help you identify any suspicious activity. To activate Gateway logging, go to transaction RZ10 and enter the following parameters:

• gw/log_level = 3
• gw/log_file = <path to log file>

2. Evaluate the Gateway log files and create ACL rules:

Once you have activated Gateway logging, you need to evaluate the log files and create Access Control List (ACL) rules. ACL rules allow you to control which programs are allowed to connect to the Gateway and which programs are allowed to be started from the Gateway. To create ACL rules, go to the transaction SM31 and enter the following tables:

• REPGUIDE
• SECGUIDE

3. Configure the Gateway parameters:

There are several Gateway parameters that you can configure to improve security. Some of the most important parameters include:

• gw/acl_file - This parameter specifies the location of the ACL files.
• gw/snc_mode - This parameter specifies the SNC mode. SNC is a security protocol that can be used to encrypt communication between the Gateway and other SAP systems.
• gw/service - This parameter specifies the services that the Gateway listens on.

For more information on these parameters, please refer to the SAP documentation.

4. Save ACL files and restart the system to activate the parameters:

Once you have made changes to the ACL files or Gateway parameters, you need to save the files and restart the system for the changes to take effect.

5. Additional security measures:

• Use Secure Network Communication (SNC): SNC encrypts communication between the SAP Gateway and other SAP systems. This helps to protect against eavesdropping and man-in-the-middle attacks.
• Use SAProuter: SAProuter is a security gateway that can be used to control access to the SAP Gateway. SAProuter can also be used to encrypt communication between the Gateway and other SAP systems.
• Regularly update your SAP Gateway software: SAP regularly releases security updates for the SAP Gateway software. It is important to keep your software up to date to patch vulnerabilities.
• Monitor your SAP Gateway for suspicious activity: Regularly review the Gateway logs to identify any suspicious activity.
• Restrict access to the SAP Gateway: Only authorized users should have access to the SAP Gateway.

By following these steps, you can help to secure your SAP Gateway server and protect your data.

Here are some additional resources that you may find helpful:

• https://sast-solutions.com/blog-en/2019/02/01/step-by-step-secure-sap-gateway/
• https://sast-solutions.com/blog-en/2019/02/01/step-by-step-secure-sap-gateway/
• https://blogs.sap.com/2021/01/26/rfc-gateway-security-part-1-basic-understanding/