'tutorials' Category

• Tutorial: Sniffing iSCSI traffic for a spoofing attack

  June 21, 2007

  Also known as “Why you need some kind of iSCSI security” Okay, after reading Himanshu Dwivedi’s presentation[PDF] on iSCSI security (insecure-SCSI hur hur hur) I decided to try and replicate one of the attacks that he mentioned in the presentation. Following is how I managed to get the data shown of a different machine. Firstly, […]

  posted in hacking, iscsi, linux, networking, security, spoofing, tutorials, wireshark by Lee

• Submission: Ralf’s updated zfs backup script (with tutorial!)

  June 20, 2007

  The following comes to you from Ralf Ramge, who has graciously allowed me to post his script and all the instructions below: “I have a small update. I’ve made the number of backups of each filesystem easier to handle by replacing the hardcoded number with a variable. I also added some comments so everybody should […]

  posted in backup, bash, script, solaris, sun, tutorials, zfs by Lee

• DRBD and Heartbeat for high availability on Linux

  June 18, 2007

  I’ve been trying to get a HA solution put together for one of our software projects here at EMC and I figured I’d share the configuration of these two products in the environment that we’re using. I have to write the documentation for it anyway, so I might as well post it here for everyone […]

  posted in drbd, failover, heartbeat, linux, tutorials, work by Lee

• Use SVM to make RAID0 and RAID1 meta-partitions

  May 17, 2007

  Firstly, the easy one: RAID0: Given 4 slices, each ~5g: First, need a metadb, I created a 100MB slice on c1t1d0s0 (which I am NOT using for the RAID, entirely separate drive) and ran this command to initiate the database. It is a good idea to mirror the database in a minimum of 3 positions, […]

  posted in geekery, hardware, raid, software, solaris, sun, svm, tutorials, work by Lee

• Getting EMC Celerras to work for iscsi on Solaris 10

  May 17, 2007

  For fun and profit! Basically, for my own categorization: 1. Celerra-side: Create filesystems (I am using 4 because I want to stripe across all 4: nas_fs -n iscsiRAID1_5g -c size=5G pool=clar_r5_performance nas_fs -n iscsiRAID2_5g -c size=5G pool=clar_r5_performance nas_fs -n iscsiRAID3_5g -c size=5G pool=clar_r5_performance nas_fs -n iscsiRAID4_5g -c size=5G pool=clar_r5_performance Mount filesystems: server_mount server_2 iscsiRAID1_5g /iscsiRAID1_5g […]

  posted in geekery, hardware, iscsi, software, solaris, sun, tutorials, work by Lee