Der CleverAdmin Blog3d ago

SSH Keys unter Linux erstellen und richtig nutzen

SSH Keys unter Linux erstellen und verstehen: Welche Schlüsseltypen es gibt, wann Ed25519 sinnvoll ist und wann RSA oder FIDO2 besser passen....

https://www.cleveradmin.de/blog/2026/06/ssh-keys-unter-linux-erstellen/
#Linux #authentifizierung #ed25519 #linux #rsa #sicherheit #ssh #SshKeys #terminal

SSH Keys unter Linux erstellen

SSH Keys unter Linux erstellen und verstehen: Ed25519, RSA, ECDSA, FIDO2, Einsatzbereiche und sichere Praxis einfach erklärt.

CleverAdmin
Analyst207May 21

Linux Flaw Exposes SSH Keys, Password Hashes

A critical nine-year-old flaw in the Linux kernel, known as CVE-2026-46333, allows everyday users to access highly sensitive data, including SSH private keys and system password hashes, on popular Linux distributions. Fortunately, patches and updates are available to fix this vulnerability.

https://osintsights.com/linux-flaw-exposes-ssh-keys-password-hashes?utm_source=mastodon&utm_medium=social

#LinuxFlaw #SshKeys #Cve202646333 #Qualys #LinuxKernel

Linux Flaw Exposes SSH Keys, Password Hashes

Learn how Linux flaw CVE-2026-46333 exposes SSH keys and password hashes. Discover the risk and protect your system now with immediate patching and updates.

OSINTSights
𝕂𝚞𝚋𝚒𝚔ℙ𝚒𝚡𝚎𝚕May 15

Oh no, please don't tell me again that Linux is now insecure on the net?!

«Linux's Latest Vulnerability Allows Reading Root-Owned Files By Unprivileged Users»

⛓️‍💥 https://www.phoronix.com/news/Linux-ssh-keysign-pwn
⛓️‍💥 https://github.com/0xdeadbeefnetwork/ssh-keysign-pwn

#sshkeysignpwn #pwn #ssh #linux #0day #keysigning #sshkeys #itsecurity #itsec #itsecurity #zeroday

Linux's Latest Vulnerability Allows Reading Root-Owned Files By Unprivileged Users

Following Dirty Frag, Fragnesia, and other Linux kernel vulnerabilities making themselves known in recent days, the latest now is ssh-keysign-pwn.

N-gated Hacker NewsMay 4
🎉 Oh joy, another tool to make deploying Kubernetes clusters as "easy" as pushing a button! Because clearly, the world needed another way to overcomplicate SSH with a dash of GitHub flair. 🚀 Meanwhile, real engineers are busy trying to remember their SSH keys. 🙃
https://github.com/alexellis/k3sup #KubernetesDeployment #SSHKeys #DevOps #Tools #Overcomplication #HackerNews #ngated
GitHub - alexellis/k3sup: bootstrap K3s over SSH in < 60s 🚀

bootstrap K3s over SSH in < 60s 🚀. Contribute to alexellis/k3sup development by creating an account on GitHub.

GitHub
N-gated Hacker NewsApr 16
🏗️🚀 Wow, riveting stuff! 🎉 Cramming SSH keys into a TPM chip - because who doesn’t want to spend their weekend deciphering tech mumbo jumbo? 🙄 Just what we needed, another thrilling chapter in the saga of “Secure It Till It Hurts.” 🔐💥
https://raymii.org/s/tutorials/Put_your_SSH_keys_in_your_TPM_chip.html #SSHkeys #TPMtech #SecureItTillItHurts #TechMumboJumbo #WeekendHacking #HackerNews #ngated
Put your SSH keys in your TPM chip! - Raymii.org

13Apr 12
Authenticate SSH with Your TPM https://hackaday.com/2026/04/11/authenticate-ssh-with-your-tpm/
#LinuxHacks #SecurityHacks #Hardwaretoken #Ssh #Sshkeys #TPM
Authenticate SSH With Your TPM

You probably don’t think about it much, but your PC probably has a TPM or Trusted Platform Module. Windows 11 requires one, and most often, it stores keys to validate your boot process. Most …

Hackaday
Hackaday [Unofficial]Apr 11

Authenticate SSH with Your TPM

https://fed.brid.gy/r/https://hackaday.com/2026/04/11/authenticate-ssh-with-your-tpm/

Authenticate SSH With Your TPM

You probably don’t think about it much, but your PC probably has a TPM or Trusted Platform Module. Windows 11 requires one, and most often, it stores keys to validate your boot process. Most …

Hackaday
N-gated Hacker NewsJan 21
🐢 Ah yes, the timeless art of turning tiny PCs into a "supercomputer" 🤖, because who doesn't want to spend their weekend fiddling with SSH keys and pretending they're building Skynet? 🛠️ Just remember, kids: #CV5 vs #CV10 is the Clash of Titans no one asked for! 😂
https://www.kenkoonwong.com/blog/parallel-computing/ #tinyPCs #supercomputer #SSHkeys #Skynet #HackerNews #ngated
Setting Up A Cluster of Tiny PCs For Parallel Computing - A Note To Myself | Everyday Is A School Day

Enjoyed learning the process of setting up a cluster of tiny PCs for parallel computing. A note to myself on installing Ubuntu, passwordless SSH, automating package installation across nodes, distributing R simulations, and comparing CV5 vs CV10 performance. Fun project!

Everyday Is A School Day
mirabilos🐈‍⬛Sep 18, 2025

Anyone got an idea how to do this:

  • expose a user on a GNU/Linux system via ssh
  • allow two keys access
    • one is the “self” key, which should be allowed as-is
    • the other is the “external” key, which triggers a password prompt
  • otherwise, password login is not permitted

I know how to do most things of this, but not all at once (AuthenticationMethods is permitted in a Match block, but we cannot match on keys, we want access to the same user, and the “self” key can also be used (agent forwarding) from nōn-local addresses.

It seems like I’ll need a custom PAM module (arrrgh, I don’t want to write one of these) that asks for the password if key B is used (does SSH expose this to PAM?).

Anyone got a better idea?

#ssh #openssh #sshkeys #pam

MITIM BlogJun 7, 2025
New post 🗝️
Okay, here's the markdown version of your comprehensive guide to setting up SSH keys, formatted for readability.
https://www.mitim.net/2025/05/ssh-key-creation-and-usage?g=5
#SSH #Hardening #SSHkeys #CyberSecurity