dropbear
Gravitational Teleport
dropbear | Gravitational Teleport | |
---|---|---|
14 | 62 | |
1,556 | 16,647 | |
- | 2.9% | |
8.8 | 10.0 | |
11 days ago | 4 days ago | |
C | Go | |
GNU General Public License v3.0 or later | GNU Affero General Public License v3.0 |
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dropbear
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Tell HN: Ubiquiti APs likely vulnerable to Terrapin
Dropbear server v2020.81 https://matt.ucc.asn.au/dropbear/dropbear.html
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Terrapin attack on SSH: what do you need to know
# docker run -it --rm debian:latest # then run the following commands apt-get update apt-get install -y git wget build-essential zlib1g-dev git clone https://github.com/mkj/dropbear cd dropbear # here we disable ChaCha20Poly1305 and enable GCM instead # CBC is disabled by default env CFLAGS='-DDROPBEAR_CHACHA20POLY1305=0 -DDROPBEAR_ENABLE_GCM_MODE=1' ./configure make make install # check if dropbear is vulnerable dropbear -R wget https://github.com/RUB-NDS/Terrapin-Scanner/releases/download/v1.1.0/Terrapin_Scanner_Linux_amd64 chmod +x Terrapin_Scanner_Linux_amd64 ./Terrapin_Scanner_Linux_amd64 -connect 127.0.0.1:22 pkill dropbear
- OpenSSH versus SSH
- Dropbear SSH
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Discussion Thread
I would follow the suggestions in https://github.com/mkj/dropbear/blob/master/DEVELOPING.md for Deubg Printing, as this seems difficult to solve within information from dropbear.
- ReMarkable2 and modern ssh
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Adding Computer Tracking (GPS)
Heads is good reference for what could be done at BIOS level. It can connect via ethernet but only because the firmware is built in (The GBE section in IFD stands for Gigabit Ethernet). If you want an SSH server, this needs to be built separately because Dropbear is too big to include by default. Due to the size of firmware and range of different wifi cards that could be installed plus the software to connect, wifi is not possible in Heads. Similarly with Bluetooth. For cellar, the firmware, software and configuration would be needed to BIOS. There is also how no service/roaming would be indicated without any physical meter like LEDs (Ethernet has LEDs to show connection). It would also take time during the boot cycle to connect to a cellular service and would block booting the OS. That said, you could add a service at boot of your OS to do this and connect to something like a NextCloud Phone Tracker to do this.
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tinyssh
While it is good to have another alternative, I think Dropbear SSH[1] is also being used very widely.
[1] https://matt.ucc.asn.au/dropbear/dropbear.html
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Host a Dev Environment on Render with VS Code and Tailscale
I need an SSH server. I try OpenSSH, but run into an issue when I attempt to log in. OpenSSH servers use privilege separation as a security measure. The OpenSSH subprocess that handles authentication runs as an unprivileged user with its root directory set to some safe location. The CAP_SYS_CHROOT capability is required to change the root directory for a process, but Render services run in unprivileged containers without this capability. I discover that there are other SSH servers, like dropbear, that don't do privilege separation. This is great because it's not necessary for my use case anyway. My SSH server will run as a non-root user and will only be available within the VPN.
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SSD belonging to Euro-cloud Scaleway was stolen,then turned up on YouTube
That's what Dropbear is supposed to do, it can be included in the initramfs of a server: https://matt.ucc.asn.au/dropbear/dropbear.html
Disclaimer: I still didn't try it myself yet, but it's on my (too long) list of things to do.
Gravitational Teleport
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List of ngrok/Cloudflare Tunnel alternatives and other tunneling software and services. Focus on self-hosting.
Teleport - Comprehensive control plane tool, but also supports accessing apps behind NATs. Written in Go.
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Apache Guacamole: a clientless remote desktop gateway
https://github.com/gravitational/teleport/blob/master/rfd/00...
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Parsing the Postgres protocol – logging executed statements
I ordinarily would have said you reinvented Teleport <https://github.com/gravitational/teleport/tree/v14.3.7#readm...> but now that they've gone AGPL with v15 I'm guessing there's a market for MIT licensed stuff, although for sure since Teleport has been around for so long it has encountered more edge cases and undergone more security reviews. I was surprised while digging up the link that Gravatational is still releasing v13 and v14 updates under Apache 2, so maybe even Teleport will continue to have legs for those who cannot deploy AGPL stuff
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👑 Top Open Source Projects of 2023 🚀
Teleport is an SSH for Clusters and Teams and aims to be the drop-in replacement for OpenSSH.
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Release Radar • February 2024 Edition
Are you looking to set up SSO for your cloud infrastructure? Or maybe establish tunnels to access services behind NATs and firewalls. Then Teleport is for you. It provides connectivity, authentication, access controls and audit for infrastructure. The newest update has a tonne of new features and improvements including enhanced device trust support, SSH connection resumption, MFA for admin actions, improved provisioning for Okta, and heaps. more. Check out all the changes in the Teleport release notes.
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OpenBao – FOSS Fork of HashiCorp Vault
In case you didn't see it: https://goteleport.com/blog/teleport-oss-switches-to-agpl-v3... and https://github.com/gravitational/teleport/pull/35259
I readily admit it's not the same amount of :fu: as BuSL or whatever the fuck is going on over at Sentry but still :-( as compared to their much friendlier Apache 2
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Who's hiring developer advocates? (December 2023)
Link to GitHub -->
- Teleport relicenses from Apache 2.0 to AGPLv3
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Gravitational Teleport alternatives - netbird, ZeroTier, and awl
4 projects | 29 Jun 2023
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Passkeys for Infrastructure
OP here, thanks for posting! Happy to Answer any questions. I have to give our a shoutout to Alan at Teleport for all his work on Passwordless and his work to make Passwordless / TouchID work with MacOS CLI https://github.com/gravitational/teleport/blob/master/rfd/00...
What are some alternatives?
tinyssh - TinySSH is small server (less than 100000 words of code)
Pomerium - Pomerium is an identity and context-aware reverse proxy for zero-trust access to web applications and services.
Code-Server - VS Code in the browser
KeyBox - Bastillion is a web-based SSH console that centrally manages administrative access to systems. Web-based administration is combined with management and distribution of user's public SSH keys.
wireguard-vyatta-ubnt - WireGuard for Ubiquiti Devices
vouch-proxy - an SSO and OAuth / OIDC login solution for Nginx using the auth_request module
tailscale - Tailscale Subnet Router on Render
telepresence - Local development against a remote Kubernetes or OpenShift cluster
render-dev-env - A remote development environment that can be hosted on Render.
Mosh - Mobile Shell
deploy-code-server - Deploy code-server to the cloud with a few clicks ☁️ 👨🏼💻
Multi SSH Config - Mirror of https://gitlab.com/osiux/multi-ssh-config