SUSE YaST DRBD 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.