S4E16: "I'll Show You Mine if You Show Me Yours"

Posted 2019-09-30 03:59
Modified 2019-10-09 16:16
Comments 1

We talk about diagramming systems/networks/etc. for documentation purposes. Jthan’s 15 clams is a really useful one on methods for remotely decrypting FDE.

• Just the Tip
• Notes
• 15 Clams
• Errata
• Music

Just the Tip

• Paden talks about the /etc/skel directory!
  • The /etc/skel directory is used to provide basic template user profiles.
  • Similarly, the /etc/default/useradd file plays in as well.

Notes

Starts at 22m43s.

I was drinking Kraken Black Spiced Rum again. Paden was drinking PBR. Jthan was drinking Coors Banquet.

• Diagramming Networks
  • Why/when to diagram?
    • For bringing in new employees
    • For reference/at-a-glance of inventory
    • Auditor use
    • Easier to phase out old hardware
  • Why not/when not to diagram?
    • LARGE environments (too cumbersome)
    • It can be hard to maintain for very dynamic environments; no documentation is almost better than old/obsolete documentation
  • Tools one can use to create diagrams
    • dia
    • Parsing nmap XML output
      • I mention it when Johnny talks about nmap output in S4E13.
    • yEd
    • Diagramo
    • xfig
    • A lot of people use and like Microsoft’s Visio.
    • Jthan has used and recommends Gliffy.

15 Clams

In this segment, Jthan shares with you a little slice of life. The title is a reference to this video. (2m16s in)

Starts at 50m45s.

Jthan wants to know how to remotely unlock LUKS-crypted FDE. Luckily, the Arch Wiki has a section on that. And you can do a LOT more with mkinitcpio hooks, such as wiping a disk with nwipe (the F/OSS, openly-developed, and vastly better fork of dwipe, the “active ingredient” of DBAN).

By the way, the source for Arch switching to Dracut can be found here.

Errata

• Paden refers to General Patton and Patton Oswalt.
• That’s right, “Dueling Banjos” was actually performed in the movie between a banjo and a guitar!
  • …But it wasn’t composed for the film.
• We didn’t mention it on-air, but I got an email from Reddit of post highlights while typing up the shownotes and lo! and behold, one of them is a Powershell diagramming tool release.
• How many ohms of resistance does a common household cat have?
• I occasionally refer to mkinitcpio as “mkinitramfs” instead.
• amayer from our IRC channel has also suggested draw.io and mermaid.js.

Music

Author r00t^2
Categories Season Four