File drbd.firewalld.xml of Package yast2-drbd

<?xml version="1.0" encoding="utf-8"?>
<service>
  <short>SUSE YaST DRBD</short>
  <description>This allows you to open various ports related to SUSE
		  YaST DRBD including Linstor support. Ports 3366/3367 are for
		  lnstor satellite, ports 3370/3376/3377 are for linstor controller,
		  and port 3371 is for linstor-controller when using HTTPS REST-API.
		  Port 7788 is the default port for DRBD connection. Ports 7788 and
		  higher are recommend to resource connections.
  </description>
  <port protocol="tcp" port="7788"/>
  <port protocol="tcp" port="3366"/>
  <port protocol="tcp" port="3367"/>
  <port protocol="tcp" port="3370"/>
  <port protocol="tcp" port="3371"/>
  <port protocol="tcp" port="3376"/>
  <port protocol="tcp" port="3377"/>
</service>