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Monday, 12 February 2024

SSH HostkeyAlgorithms

 A note for .ssh/config

The file should contain

HostkeyAlgorithms =+ssh-dss,ssh-rsa

Note the =+

I had received the following error earlier;

Unable to negotiate with xx.xx.xx.xx port 22: no matching host key type found. Their offer: rsa-sha2-512,rsa-sha2-256,ecdsa-sha2-nistp256,ssh-ed25519

and couldn't for the life of me understand why. Eventually tracing down the config file from above was missing the =+ and I'm assuming this meant is was only allowing ssh-dss,ssh-rsa and causing the error above.





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