IT Infrastructure I/II: Design and Practices

Helpful Web Pages

Here Some interesting testing articles and information:

• Linux
  • InfoWorld: Linux at 20
  • http://www.commandlinefu.com/commands/browse
  • http://files.fosswire.com/2007/08/fwunixref.pdf
  • http://www.oreillynet.com/linux/cmd/
• Raspberry Pi
  • http://www.raspberrypi-spy.co.uk/2014/04/how-to-change-the-command-line-font-size/
    • Change the font size on the terminal
• dig
  • dig summary
• vi/vim
  • vi-vim cheatsheets
    • http://www.viemu.com/vi-vim-cheat-sheet.gif
      • local copy: 2110Pics\vi-vim-cheat-sheet.gif
    • http://www.lagmonster.org/docs/vi.html
  • vim game to help learn shortcuts
    • http://vim-adventures.com/
  Security
  • NPR: In Cyberwar, Software Flaws Are A Hot Commodity
    • http://www.npr.org/2013/02/12/171737191/in-cyberwar-software-flaws-are-a-hot-commodity
• Hak5
  • http://hak5.org/
  • Hak5 Linux 101
  • Getting started
    • http://hak5.org/episodes/haktip-57
  • File manipulation
    • http://hak5.org/episodes/haktip-58
  • Wildcards, hard links and symbolic links
    • http://hak5.org/episodes/haktip-59
  • Filenames, history and shortcuts
    • http://hak5.org/episodes/haktip-60 
  • Type, which and apropos
    • http://hak5.org/episodes/haktip-61
  • Alias
    • http://hak5.org/episodes/haktip-62
  • Redirection of standard out
    • http://hak5.org/episodes/haktip-63
  • Wireshark
    • http://hak5.org/episodes/haktip-64
• Redirecting errors
  • http://hak5.org/episodes/haktip-65
• Cat and standard input
  • http://hak5.org/episodes/haktip-66
• Grep and pipes
  • http://hak5.org/episodes/haktip-67
• Echo
  • http://hak5.org/episodes/haktip-68
• Expansions
  • http://hak5.org/episodes/haktip-69
• Quotes
  • http://hak5.org/episodes/haktip-70
• Favorite tips and tricks
  • http://hak5.org/episodes/haktip-71
• Resources
  • http://hak5.org/episodes/haktip-72
• Keyboard shortcuts
  • http://hak5.org/episodes/haktip-73
• History
  • http://hak5.org/episodes/haktip-74
• How to Use Permissions (~8:15)
  • http://hak5.org/episodes/haktip-75
• How to Change Your Identity
  • http://hak5.org/episodes/haktip-76
• Hak5 Bash Basics
  • Bash Basics: Ping, Date, and While
    • http://hak5.org/episodes/haktip-35
  • Bash Basics: Turn Long Commands into Scripts
    • http://hak5.org/episodes/haktip-37
  • Bash Basics: Keep History Free from Passwords
    • http://hak5.org/episodes/haktip-39
  • Bash History Tricks
    • http://hak5.org/episodes/haktip-41
  • Bash Sub without SED
    • http://hak5.org/episodes/haktip-43
  • Linux bash tricks:
    • http://hak5.org/episodes/haktip-47
  • 
    
• Hak5 SSH Info
  • Linux SSH
  • http://hak5.org/episodes/hak5-1109
• Hak5 Wireless 101
  Note: the first link is to the original, the second link is to a file copy if the original link doesn't work
• The Six Modes of Wireless (~7:30)
• http://hak5.org/episodes/haktip-9
• hak5-9
• 802.11 Protocols (~9:30)
  • http://hak5.org/episodes/haktip-11
  • hak5-11
• Channels and Interference (~7:00)
  • http://hak5.org/episodes/haktip-13
  • hak5-13
• 802.11n (~6:30)
  • http://hak5.org/episodes/haktip-15
  • hak5-15
• 802.11 Frames (~9:00)
  • http://hak5.org/episodes/haktip-17
  • hak5-17
• Beacon Frames and Injection (~8:00)
  • http://hak5.org/episodes/haktip-19
  • hak5-19
• Frame Analyzing (~10:00)
  • http://hak5.org/episodes/haktip-21
  • hak5-21
• Probe Requests and  Responses (~10:00)
  • http://hak5.org/episodes/haktip-23
  • hak5-23
• Hak5 Misc Wireless
  • Packet Sniffing 101: Promiscuous Mode
    • http://hak5.org/episodes/haktip-3
  • MAC 101:Fundamentals and Spoofing
    • http://hak5.org/episodes/haktip-5
• Hak5 NMap
  • NMap 101: OS Detection
    • http://hak5.org/episodes/haktip-99
  • NMap 101: Timing Options Part 1
    • http://hak5.org/episodes/haktip-100
  • NMap 101: Timing Options Part 2
    • http://hak5.org/episodes/haktip-101
  • HakTip 102 – NMap 101: Fun With Firewalls!
    • http://hak5.org/episodes/haktip-102
  • HakTip 103 – NMap 101: How to Output to a File
    • http://hak5.org/episodes/haktip-103
  • HakTip 104 – NMap 101: How to Troubleshoot Scans
    • http://hak5.org/episodes/haktip-104
  • HakTip 105 – NMap 101: The Nmap Scripting Engine
    • http://hak5.org/episodes/haktip-105
  • HakTip 106 – NMap 101: The Zenmap Interface
    • http://hak5.org/episodes/haktip-106
  • Haktip 107 – NMap 101: How to Read a Zenmap Output
    • http://hak5.org/episodes/haktip-107
  • Haktip 108 – NMap 101: NDiff and Your Tips!
    • http://hak5.org/episodes/haktip-108
• Hak5 Wireshark 101 Series
  • Wireshark 101: How to Wireshark
    • http://hak5.org/episodes/haktip-115
  • Wireshark 101: The OSI Model
    • http://hak5.org/episodes/haktip-116
  • Wireshark 101:
• Articles
  Note, these references pop a new page.
  • Windows/Office Migration
• http://www.infoworld.com/d/open-source-software/triumph-and-disaster-two-migrations-openoffice-208604
• Other
  • vi-vim cheatsheets
    • http://www.viemu.com/vi-vim-cheat-sheet.gif
      • local copy: 2110Pics\vi-vim-cheat-sheet.gif
    • http://www.lagmonster.org/docs/vi.html
    • 
      
  • vim game to help learn shortcuts
    • http://vim-adventures.com/
• USB drive won't mount in VM
  • In the VM:
    • Check if there is a group member named plugdev
      • If not create one
    • Ensure each user needing USB is a member of that group
      • If not add user(s) to plugdev
    • Restart HAL (Hardware Abstraction Layer)
      • /etc/init.d/hal restart
      • Or restart the VM
• Adding a USB drive to your CLI only Debian
  • Plug USB into the workstation
    • Ensure it shows in the workstation's "File System"
    • It should show in media as the USB device name
  • Start your Debian VM
    • At the top of VirturalBox click on Devices, then USB Devices, then check USB2. Flash Disk
    • The USB device should disappear from the Workstation
  • As root:
    • Run fdisk: fdisk -l
    • Look for a new device, it is usually /dev/sdb
      • Note sda is usually your primary disk drive(s)
      • There may or not be a number at the end
    • Create a directory for it to mount to: mkdir /mnt/sdb1
    • Edit /etc/fstab so it will automount:
      • add: /dev/sdb /mnt/sdb1    msdos defaults 0 0
      • where:
        • dev/sdb is the device found with fdisk
        • /mnt is the directory you created
        • msdos is the FS reported by fdisk
        • defaults and the 2 0s are standard options
    • Mount the USB: mount -a
      • that mounts all devices as listed if fstab\
    • To do a one-time mount: mount /dev/sdb /mnt/sdb1
  • Notes: if you remount the USB later the device may change, eg. sdb may be sdc or something else.  Always check.
• Fixing CentOS VM repository access
  • Make a backup copy, then edit /etc/yum.repos.d/CentOS-Base.repo
    • There are 4 sections with a variable called mirrorlist
      • Comment them out
    • Those same sections have each have a commented out baseurl entry
      • Make copies of each to back them up incase of error editing
        • In nano <Ctrl>-k cuts, <Ctrl>-u pastes
      • Uncomment each of the copies and edit the entry to read:
        • baseurl=http://lab302-repo.hades.lab/centos/Packages
      • Save the file and test with yum or the Software option in Applications --> System Tools
        • It may take a few seconds to load the list of packages.
  • The original yum.repos.d works on the internet, the one you modify will only work in the lab
    • You might want to make a template of each to allow updates at home or in the lab
  • An untested copy of yum.repos.d's CentOS-Base.repo has been placed in http:/lab302-web
    • Look in CentOS additional  and get the file there
    • Don't forget to back up your original