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from compromised systems is John the Ripper (John). John is a free tool from Openwall [1]. System administrators should use John to perform internal password audits. It's a small (<1MB) and simple

buffered disk reads: 616 MB in 3.00 seconds = 205.03 MB/sec $ hdparm -T /dev/sda /dev/sda: Timing cached reads: 6292 MB in 2.00 seconds = 3153.09 MB/sec If this were a spinning disk, you would also

/s wMB/s avgrq-sz ... sdb 0.00 28.00 1.00 259.00 0.00 119.29 939.69 ... Parallelism Multiple computers can access enterprise storage, and multiple threads can access

             SN                   Model                                    Namespace Usage                      Format           FW Rev ---------------- -------------------- ---------------------------------------- --------- -------------------------- ---------------- -------- /dev/nvme0n1     152e778212a62015     Linux                                    1         21.00  TB /  21.00  TB     4 KiB +  0 B     5.4.12-0 You are now able to read and write from and to /dev/nvme0n1

was there. To test whether this worked, ssh to the node n0001 as root. [root@test1 ~]# ssh n0001 Last login: Sat May 26 12:00:06 2012 from 10.1.0.250 The /etc/hosts on the master node works fine

/nsswitch.conf (Konfigurieren der Namensauflösung) 08 ... 09 hosts files dns 10 ipnodes files dns 11 ... 12 # vi /etc/hosts 13 ::1 localhost 14 127.0.0.1 localhost 15 192.168.1.200 myiscsiserver myiscsiserver.local loghost 16

on enterprise-grade rack hardware, there is no reason one cannot follow along at home with a few beige boxes and an 10Mb hub, as long as the servers are capable of booting from the network with PXE [6]. PXE

network adapters, one for administration and one for the web server. I gave the system 1GB memory, but it has not yet used more than 200MB. Then, boot the image. You have several choices: Add

6), and start stream blocking (line 7), which executes the command and waits for the response. Now, write the output to a variable (lines 9-12), close the stream (line 14), and send the response

System, DUP: total=8.00MB, used=4.00KB Metadata, DUP: total=1.00GB, used=79.20MB If Btrfs only has one device available when the filesystem is created, it automatically generates a duplicate