Difference between revisions of "SSH"
From HCL
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== Passwordless SSH == | == Passwordless SSH == | ||
To set up passwordless SSH, there are three main things to do: | To set up passwordless SSH, there are three main things to do: | ||
| − | + | * generate a pair of public/private keys on your local computer | |
| − | + | * copy the public key from the source computer to the target computer's authorized_keys file | |
| − | + | * check the permissions. | |
| − | |||
You can repeat that transitively for "A->B->C". You can use the initial pair of keys everywhere. | You can repeat that transitively for "A->B->C". You can use the initial pair of keys everywhere. | ||
Revision as of 12:10, 22 February 2010
Passwordless SSH
To set up passwordless SSH, there are three main things to do:
- generate a pair of public/private keys on your local computer
- copy the public key from the source computer to the target computer's authorized_keys file
- check the permissions.
You can repeat that transitively for "A->B->C". You can use the initial pair of keys everywhere.
See here for details:
http://www.stearns.org/doc/ssh-techniques.current.html
Making a cascade of SSH connections easy
Here is a very convenient way to set up the access to any machine directly instead of doing a cascade of SSH calls. Put this into your .ssh/config file :
Host csserver User kdichev Hostname csserver.ucd.ie Host heterogeneous User kiril Hostname heterogeneous.ucd.ie ProxyCommand ssh -qax csserver nc %h %p Host hcl01 Hostname hcl01.ucd.ie ProxyCommand ssh -qax heterogeneous nc %h %p
Now, you can do:
ssh hcl01
and you get logged to the node immediately.
