Modifying OS Configurations

Scenarios

To ensure the proper installation of the SAP S/4HANA system, disable the OS firewalls of all nodes before the installation.

Procedure

1. Log in to the NAT server as user root using the key file. Then, use SSH to switch to the ASCS node.
2. Disable the automatic startup of the firewall, and disable the firewall.
   • If the OS is SUSE Linux Enterprise Server 12, run the following commands to disable automatic firewall startup and disable the firewall:

     SuSEfirewall2 off

     SuSEfirewall2 stop

     systemctl disable SuSEfirewall2_init.service

     systemctl disable SuSEfirewall2.service

     systemctl stop SuSEfirewall2_init.service

     systemctl stop SuSEfirewall2.service

   • If the OS is SUSE Linux Enterprise Server 15, run the following commands to disable automatic firewall startup and disable the firewall:

     systemctl stop firewalld

     systemctl disable firewalld

3. Repeat step 1 and 2 to disable the firewalls of all SAP S/4HANA nodes.