SSH/Public Key Authentication: Difference between revisions
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(→EdDSA) |
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* [https://goteleport.com/blog/comparing-ssh-keys/ SSH Keys » RSA, DSA, ECDSA vs EdDSA] | * [https://goteleport.com/blog/comparing-ssh-keys/ SSH Keys » RSA, DSA, ECDSA vs EdDSA] | ||
* [https://www.raspberrypi.org/documentation/remote-access/ssh/passwordless.md Raspberry Pi Public Key Authentication] | * [https://www.raspberrypi.org/documentation/remote-access/ssh/passwordless.md Raspberry Pi Public Key Authentication] | ||
* [[Bastion SSH Tunneling]] | |||
Revision as of 04:28, 25 July 2024
#################### CLIENT SIDE ####################
# generating a new ssh key and adding it to the ssh client
# https://gist.github.com/shahedhossain/7d91028ba1eb9c56049ea421a12e76fd
# ssh key generation for chorke
ssh-keygen -t rsa -b 4096 -C "[email protected]"
# Generating public/private rsa key pair.
# Enter a file in which to save the key (/Users/user/.ssh/id_rsa): [Press enter]
# Enter passphrase (empty for no passphrase): [Type a passphrase]
# Enter same passphrase again: [Type passphrase again]
# rpi_chorke_rsa add to ~/.ssh/config
Host rpi.chorke.org
HostName 139.59.51.80
# PreferredAuthentications publickey
IdentityFile ~/.ssh/rpi_chorke_rsa
Port 4321
# copy root/misc public key to ~/.ssh/authorized_keys for each users
ssh-copy-id -i ~/.ssh/rpi_chorke_rsa.pub [email protected] -p 4321
ssh-copy-id -i ~/.ssh/rpi_chorke_rsa.pub [email protected] -p 4321
#################### SERVER SIDE ####################
# for disable password authentication
# & enable public key authentication
# edit by /etc/ssh/sshd_config
PasswordAuthentication no
PubkeyAuthentication yes
# after edit save & exit restart sshd
# to update sshd configuration
# systemctl restart sshd
service sshd restart
#################### CLIENT SIDE ####################
# root user public key
ssh [email protected]
# Enter passphrase for key '/Users/user/.ssh/rpi_chorke_rsa':
# misc user public key
ssh [email protected]
# Enter passphrase for key '/Users/user/.ssh/rpi_chorke_rsa':
#################### CLIENT SIDE ####################
# root user password disabled
ssh [email protected] -p 4321
# [email protected]: Permission denied (publickey,gssapi-keyex,gssapi-with-mic).
# misc user password disabled
ssh [email protected] -p 4321
# [email protected]: Permission denied (publickey,gssapi-keyex,gssapi-with-mic).
EdDSA
ssh-keygen -t ed25519 -C "[email protected]" ssh-keygen -t ed25519 -C "[email protected]" -f ~/.ssh/id_ed25519
chmod 600 ~/.ssh/id_ed25519 chmod 644 ~/.ssh/id_ed25519.pub
Too Many Auth
too many authentication failures issue ssh -o PreferredAuthentications=password [email protected] ssh -o IdentityAgent=none [email protected] ssh -o IdentitiesOnly=yes [email protected] |
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