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forwarding port 22 safe? (alien.top)

submitted 11 months ago by [email protected] to c/[email protected]

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i want to remotely ssh to my home server, and I was wondering if I could just forward port 22 with disabling password login and use pubkey authentication will be safe enough?

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[–] [email protected] 1 points 11 months ago (7 children)

Also don't use rsa, use Ed25519 nowadays

[–] [email protected] 1 points 11 months ago (6 children)

RSA is fine. It isn't like you will have to worry about the length of the keys for SSH.

[–] [email protected] 1 points 11 months ago (1 children)

https://arstechnica.com/security/2023/11/hackers-can-steal-ssh-cryptographic-keys-in-new-cutting-edge-attack/

[–] [email protected] 1 points 11 months ago

Requires an actual hardware error. Almost all implementations, including all open source SSH implementations, check that the signature is valid thus preventing a cosmic ray induced bit flip from triggering this issue and any related issue.

What effect do hardware errors have on Ed25519?

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