103 lines
3.9 KiB
Org Mode
103 lines
3.9 KiB
Org Mode
* fschl dotfiles
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Things that make my linux life more comfortable, portable and secure.
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For debian, or debian-based distros. using i3wm.org on the desktop.
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** Questions this repos tries to answer
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- How long does it take for you to set up a machine?
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- Do you have backups?
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- Are you using a password manager?
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- How do you transport your secrets?
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- Can you get things done without *your* computer?
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- Rescue+Recover friends laptops/computers
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- panic-ops using a friends laptop
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*** Firefox/Thunderbird customization
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- goto ~.mozilla/firefox/<user-profile>/~
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- ~mkdir chrome/ && cp ~/dotfiles/userChrome.css ./chrome/~
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- open Firefox: ~about:config~ and set ~toolkit.legacyUserProfileCustomizations.stylesheets~ to *true*
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*** Security
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**** SSH Hardening
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- https://blog.g3rt.nl/upgrade-your-ssh-keys.html
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- https://stribika.github.io/2015/01/04/secure-secure-shell.html
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- https://wiki.mozilla.org/Security/Guidelines/OpenSSH#OpenSSH_client
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- see ~/etc/ssh/ssh_config~ and ~.ssh/config~
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**** SSH key generation
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#+BEGIN_SRC bash
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# ED25519 keys are favored over RSA keys when backward compatibility ''is not required''.
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# This is only compatible with OpenSSH 6.5+ and fixed-size (256 bytes).
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$ ssh-keygen -t ed25519 -f ~/.ssh/id_ed25519_host_$(date +%Y-%m-%d) -C "Key to HOST for user-xyz"
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# Fallback for really old systems (why do you still have those??)
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# RSA keys are favored over ECDSA keys when backward compatibility ''is required'',
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# thus, newly generated keys are always either ED25519 or RSA (NOT ECDSA or DSA).
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$ ssh-keygen -t rsa -b 8192 -f ~/.ssh/id_rsa_host_$(date +%Y-%m-%d) -C "Key to HOST for user-xyz"
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#+END_SRC
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**** GnuPG
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- https://wiki.mozilla.org/Security/Key_Management
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- https://keyring.debian.org/creating-key.html
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- https://wiki.debian.org/Subkeys
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~~/.gnupg/gpg.conf~:
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#+BEGIN_SRC bash
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personal-digest-preferences SHA512 SHA384
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cert-digest-algo SHA256
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default-preference-list SHA512 SHA384 AES256 ZLIB BZIP2 ZIP Uncompressed
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keyid-format 0xlong
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#+END_SRC
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**** Managing logins & passphrases
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- use a secure, cross-platform, *cloudless* password manager, e.g keepassXC
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**** Backup Secure Keys
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- get 2 USB thumb drives
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- on each, create 2 partitions (ext4, you will never use them on any windows device anyway)
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- https://wiki.archlinux.org/index.php/Dm-crypt/Device_Encryption
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Nowadays it's mere chance to find a USB thumb drive with less than 4GB storage.
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Though, you want a dedicated drive to transport your password database, ssh keys and GPG keys.
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Those don't require more than a couple MB. So what to do with the remaining space?
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Scenarios:
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- You visit friends, only have your keys with you and you have to check your mails, assist a colleague
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in some network/ops emergency or just securely look up some confidential information.
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- A family member calls: their HDD just died and you are asked to quickly help out on recovery.
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Boot into a safe environment, having all your credentials available in a secure manner.
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Have a bootable forensics toolbox around to quickly get going in a familiar setup.
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Solution: multi-boot!
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**** Thumb Drive Setup
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3 partitions: boot+isos, luks encrypted, unencrypted partition for non-sensitive data
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** TODO [0/5]
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- [ ] explain setup, ideas, practises
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- [ ] add HOWTO
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- [ ] Check new bootable USB solution: https://ventoy.net/en/index.html
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- [ ] move to ansible for easier modularization of setup
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- [ ] OR: give GUIX a shot
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** Moving to Arch
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- official repository setup: https://wiki.archlinux.org/title/Official_repositories#multilib
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- ~multiplib~ is required for wine
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- Sound troubleshooting: https://wiki.archlinux.org/title/Advanced_Linux_Sound_Architecture/Troubleshooting#HDMI
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- Skype, VSCode: use ~yay~
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