How are `/etc/ssh/ssh_known_hosts` and `~/.ssh/known_hosts` used for client authentication?
SSH The Definitive Guide says
OpenSSH maintains a single database serving both server authentication and client
authentication. It is the union of the system’s known_hosts file (/etc/ssh/ssh_known_hosts), together with the user’s~/.ssh/known_hostsfile on either the source machine
(for server authentication) or the target machine (for client authentication).
According to https://security.stackexchange.com/a/20710/,
I think /etc/ssh/ssh_known_hosts and ~/.ssh/known_hosts are for server authentication only, and ~/.ssh/authorized_keys is for user authentication only.
Does "client authentication" mean the same as "user authentication"?
How are /etc/ssh/ssh_known_hosts and ~/.ssh/known_hosts used for client authentication?
Thanks.
ssh
asked 3 hours ago
TimTim
27.6k78264480
add a comment |
SSH The Definitive Guide says
OpenSSH maintains a single database serving both server authentication and client
authentication. It is the union of the system’s known_hosts file (/etc/ssh/ssh_known_hosts), together with the user’s~/.ssh/known_hostsfile on either the source machine
(for server authentication) or the target machine (for client authentication).
According to https://security.stackexchange.com/a/20710/,
I think /etc/ssh/ssh_known_hosts and ~/.ssh/known_hosts are for server authentication only, and ~/.ssh/authorized_keys is for user authentication only.
Does "client authentication" mean the same as "user authentication"?
How are /etc/ssh/ssh_known_hosts and ~/.ssh/known_hosts used for client authentication?
Thanks.
ssh
asked 3 hours ago
TimTim
27.6k78264480
If you have the public key of the server you're about to connect to, you can add it to ~/.ssh/known_hosts on the client manually.
– 炸鱼薯条德里克
2 hours ago
That is for server authentication. What is "client authentication" here?
– Tim
2 hours ago
The same, but used by server to directly reject untrusted client host. After passing the client authentication, that client still need to pass user authentication. Used in case like "I don't want anyone but only computers of my company to connect, no matter how much user password or user private key or any type of user credentials they are holding".
– 炸鱼薯条德里克
2 hours ago
Does "client authentication" mean the same as "user authentication"? How are /etc/ssh/ssh_known_hosts and ~/.ssh/known_hosts used for client authentication?
– Tim
2 hours ago
add a comment |
SSH The Definitive Guide says
OpenSSH maintains a single database serving both server authentication and client
authentication. It is the union of the system’s known_hosts file (/etc/ssh/ssh_known_hosts), together with the user’s~/.ssh/known_hostsfile on either the source machine
(for server authentication) or the target machine (for client authentication).
According to https://security.stackexchange.com/a/20710/,
I think /etc/ssh/ssh_known_hosts and ~/.ssh/known_hosts are for server authentication only, and ~/.ssh/authorized_keys is for user authentication only.
Does "client authentication" mean the same as "user authentication"?
How are /etc/ssh/ssh_known_hosts and ~/.ssh/known_hosts used for client authentication?
Thanks.
ssh
asked 3 hours ago
TimTim
27.6k78264480
SSH The Definitive Guide says
OpenSSH maintains a single database serving both server authentication and client
authentication. It is the union of the system’s known_hosts file (/etc/ssh/ssh_known_hosts), together with the user’s~/.ssh/known_hostsfile on either the source machine
(for server authentication) or the target machine (for client authentication).
According to https://security.stackexchange.com/a/20710/,
I think /etc/ssh/ssh_known_hosts and ~/.ssh/known_hosts are for server authentication only, and ~/.ssh/authorized_keys is for user authentication only.
Does "client authentication" mean the same as "user authentication"?
How are /etc/ssh/ssh_known_hosts and ~/.ssh/known_hosts used for client authentication?
Thanks.
ssh
ssh
asked 3 hours ago
TimTim
27.6k78264480
asked 3 hours ago
TimTim
27.6k78264480
asked 3 hours ago
TimTim
27.6k78264480
asked 3 hours ago
TimTim
27.6k78264480
asked 3 hours ago
TimTim
27.6k78264480
27.6k78264480
If you have the public key of the server you're about to connect to, you can add it to ~/.ssh/known_hosts on the client manually.
– 炸鱼薯条德里克
2 hours ago
That is for server authentication. What is "client authentication" here?
– Tim
2 hours ago
The same, but used by server to directly reject untrusted client host. After passing the client authentication, that client still need to pass user authentication. Used in case like "I don't want anyone but only computers of my company to connect, no matter how much user password or user private key or any type of user credentials they are holding".
– 炸鱼薯条德里克
2 hours ago
Does "client authentication" mean the same as "user authentication"? How are /etc/ssh/ssh_known_hosts and ~/.ssh/known_hosts used for client authentication?
– Tim
2 hours ago
add a comment |
If you have the public key of the server you're about to connect to, you can add it to ~/.ssh/known_hosts on the client manually.
– 炸鱼薯条德里克
2 hours ago
That is for server authentication. What is "client authentication" here?
– Tim
2 hours ago
The same, but used by server to directly reject untrusted client host. After passing the client authentication, that client still need to pass user authentication. Used in case like "I don't want anyone but only computers of my company to connect, no matter how much user password or user private key or any type of user credentials they are holding".
– 炸鱼薯条德里克
2 hours ago
Does "client authentication" mean the same as "user authentication"? How are /etc/ssh/ssh_known_hosts and ~/.ssh/known_hosts used for client authentication?
– Tim
2 hours ago
If you have the public key of the server you're about to connect to, you can add it to ~/.ssh/known_hosts on the client manually.
– 炸鱼薯条德里克
2 hours ago
If you have the public key of the server you're about to connect to, you can add it to ~/.ssh/known_hosts on the client manually.
– 炸鱼薯条德里克
2 hours ago
That is for server authentication. What is "client authentication" here?
– Tim
2 hours ago
That is for server authentication. What is "client authentication" here?
– Tim
2 hours ago
The same, but used by server to directly reject untrusted client host. After passing the client authentication, that client still need to pass user authentication. Used in case like "I don't want anyone but only computers of my company to connect, no matter how much user password or user private key or any type of user credentials they are holding".
– 炸鱼薯条德里克
2 hours ago
The same, but used by server to directly reject untrusted client host. After passing the client authentication, that client still need to pass user authentication. Used in case like "I don't want anyone but only computers of my company to connect, no matter how much user password or user private key or any type of user credentials they are holding".
– 炸鱼薯条德里克
2 hours ago
Does "client authentication" mean the same as "user authentication"? How are /etc/ssh/ssh_known_hosts and ~/.ssh/known_hosts used for client authentication?
– Tim
2 hours ago
Does "client authentication" mean the same as "user authentication"? How are /etc/ssh/ssh_known_hosts and ~/.ssh/known_hosts used for client authentication?
– Tim
2 hours ago
add a comment |
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If you have the public key of the server you're about to connect to, you can add it to ~/.ssh/known_hosts on the client manually.
– 炸鱼薯条德里克
2 hours ago
That is for server authentication. What is "client authentication" here?
– Tim
2 hours ago
The same, but used by server to directly reject untrusted client host. After passing the client authentication, that client still need to pass user authentication. Used in case like "I don't want anyone but only computers of my company to connect, no matter how much user password or user private key or any type of user credentials they are holding".
– 炸鱼薯条德里克
2 hours ago
Does "client authentication" mean the same as "user authentication"? How are /etc/ssh/ssh_known_hosts and ~/.ssh/known_hosts used for client authentication?
– Tim
2 hours ago