Have you tried security oriented distro Operator.iso by ussysadmin.org? It is based on knoppix and debian. Also it is one of the best network testing and pen testers tool?
$169.99
HP ProLiant Xeon E3-1220L V2 MicroServer Gen8 2.30 GHz 16 GB RAM NO DRIVES
$199.99
HPE ProLiant MicroServer Gen10 Plus v2 Ultra Micro Tower Server - 1 x Intel Xeon
$846.19
SuperMicro Server 505-2 Intel Atom 2.4GHz 8GB RAM SYS-5018A-FTN4 1U Rackmount
$202.49
HP ProLiant HSTNS-5151 Micro Server 8GB RAM No Drives/Key/Caddies *READ*
$94.99
HPE ProLiant MicroServer Gen8 Intel Xeon E3-1265L 16GB ECC PCIe x16 4x1TB HDD
$249.99
Supermicro 5018A-FTN4 Rack Server - Black
$125.00
Microsel Server Tower Supermicro X10SAE E3-1275 V3 @3.5GHz 16GB 509849-001
$149.99
HP ProLiant DL165-G7 1u Rack Server 2X AMD Opteron 24core 2.20GHz 16GB NO HDD
$325.00
Supermicro Server 1U 8x 2.5" Bay X9DRH-7F 2x E5-2670 V2 32GB - 2208 RAID RAILS
$154.00