Modifying OS Configurations

Procedure

1. Log in to the NAT server as user root using the key file. Then, use SSH to switch to SAP HANA nodes.
2. Run the following commands on the SAP HANA node to disable automatic firewall enabling and disable the firewall:
   • If the OS is SUSE Linux Enterprise Server 12, run the following commands:

     SuSEfirewall2 off

     SuSEfirewall2 stop

     systemctl disable SuSEfirewall2_init.service

     systemctl disable SuSEfirewall2.service

     systemctl stop SuSEfirewall2_init.service

     systemctl stop SuSEfirewall2.service

     Run the following command to check the firewall status:

     systemctl status SuSEfirewall2.service

     If information similar to the following is displayed, automatic firewall start and stop are disabled:

     

   • If the OS is SUSE Linux Enterprise Server 15, run the following commands:

     systemctl stop firewalld

     systemctl disable firewalld

3. Repeat the preceding step to disable the firewalls of all nodes in the SAP HANA system.