Suse linux enterprise server 12 - security guide.
Lenovo System x 3100 M5 - Servidor (SATA, Serial Attached SCSI (SAS), Intel Xeon E3 v3, E3-1220V3, Torre, Microsoft Windows Server 2012/2008/R2, SBS 2011, Red Hat Enterprise Linux, SUSE Linux, VMware, SmartCache, L3)