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Guardian-agent Alternatives
Similar projects and alternatives to guardian-agent
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WorkOS
The modern identity platform for B2B SaaS. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.
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muxile
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mac-ssh-confirm
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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
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guardian-agent reviews and mentions
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Restricting SSH Agent Keys
https://github.com/StanfordSNR/guardian-agent
The problem basically is the current agent forwarding protocol doesn't have a way to reliably identify the source and remote host that can't be spoofed. guardian-agent tries to do that using some extra software, this linked SSH proposal is to add that to SSH but it will require software upgrades even to the sshd of the intermediate and remote hosts - it's not ideal that it can't just work out of the box - but I welcome this we just need to get it done now for later.
I frequently finding myself thinking about adding useful things to software I want to use now and go well it will be years before its on every host I use and can be used reliably. I have had this thought on and off for more than a decade. Ship some new stuff, it'l be great later :D
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The pitfalls of using SSH-agent, or how to use an agent safely
ObPlug for Guardian Agent, which is basically "safe" ssh-agent forwarding (and works with Mosh and SSH): https://github.com/StanfordSNR/guardian-agent
The basic story is that ssh-agent really just exposes a primitive of "please sign this challenge," which is useful locally, but the protocol wasn't designed to be forwarded. If requests are coming from a semi-trusted intermediary host, the protocol doesn't tell the agent (a) what remote server is being authenticated to [i.e., who generated the challenge?], or (b) what command is going to be executed. It doesn't even really know (c) what (semi-trusted) host has forwarded the challenge?
Guardian Agent is a sort of hack that allows the agent to know (a), (b), and (c) before deciding whether to grant or deny the request, and you can set up policies like, "I'd like to allow `jump host x` to use to run "git pull" when talking to `git server y`, but that's it." The basic ssh-agent protocol just doesn't have enough info to be able to do something like that.
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Mosh: The Mobile Shell
there is a fork with port forwarding support https://github.com/rinne/mosh and a PR with a long discussion https://github.com/mobile-shell/mosh/pull/696 on why it's not merged
you can compile them yourself or if you want to skip the step I recently set up GitHub actions to compile linux binaries of this [1][2], tested by a sample of 1 so no guarantees it works, was planning on doing a tap PR/tap of it at some point
also the official developers have been involved a project to solve this while improving the whole-agent approval things also https://github.com/StanfordSNR/guardian-agent , but I couldn't get it to work which is why I tried the fork and got that working
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AskReddit: is there such a thing as async SSH that allows for zero latency typing? (explanation in text)
‘mosh’ is amazing for this, although I had to stop using it years ago because it didn’t support key forwarding. Apparently, there’s now a solution for that: https://github.com/StanfordSNR/guardian-agent
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A note from our sponsor - InfluxDB
www.influxdata.com | 18 Apr 2024
Stats
StanfordSNR/guardian-agent is an open source project licensed under BSD 3-clause "New" or "Revised" License which is an OSI approved license.
The primary programming language of guardian-agent is Go.