| 1 |
$Id: howto-ssh-with-rsa-keys-(passwordless-login).txt,v 1.1.1.1 2002/02/11 01:22:17 cvsjoko Exp $ |
| 2 |
|
| 3 |
$Log: howto-ssh-with-rsa-keys-(passwordless-login).txt,v $ |
| 4 |
Revision 1.1.1.1 2002/02/11 01:22:17 cvsjoko |
| 5 |
first checkin' |
| 6 |
|
| 7 |
|
| 8 |
|
| 9 |
------------------------------------------------------------------------------ |
| 10 |
1. local machine (e.g.: your laptop) (want to login to remote one) |
| 11 |
|
| 12 |
THIS METHOD IS a) CLUMSY AND b) DANGEROUS!!! |
| 13 |
PLEASE USE METHOD 2. TO DO THIS! |
| 14 |
|
| 15 |
- check if you can login to the remote machine |
| 16 |
via "normal" password authentication: |
| 17 |
- ssh <username>@<remote_machine> |
| 18 |
|
| 19 |
- create keys: |
| 20 |
- rsa-keys: ssh-keygen |
| 21 |
- dsa-keys: ssh-keygen -d |
| 22 |
|
| 23 |
- create authorized_keys: |
| 24 |
- cd ~/.ssh/ |
| 25 |
- rsa-keys: cat identity.pub >> authorized_keys |
| 26 |
- dsa-keys: cat id_dsa.pub >> authorized_keys |
| 27 |
|
| 28 |
- take care of proper file-permissions |
| 29 |
- chmod -R og-rwx ~/.ssh |
| 30 |
|
| 31 |
- authorize remote machines / distribute "authorized_keys" |
| 32 |
- scp authorized_keys <username>@<remote_machine>:~/.ssh/ |
| 33 |
this is dangerous!!! it will overwrite the "authorized_keys" file completely |
| 34 |
|
| 35 |
- test login to remote machine |
| 36 |
- ssh <remote_machine> |
| 37 |
|
| 38 |
2. remote machine (e.g.: a backup server) (want to login to this one) |
| 39 |
|
| 40 |
which is machine is what? |
| 41 |
<worker> the machine you are working on |
| 42 |
<remote> the machine you want to log in |
| 43 |
|
| 44 |
which account is what? |
| 45 |
<service> is the account on <worker> (this one might execute some cronjobs) |
| 46 |
<joko_backup> is the account on <remote> |
| 47 |
|
| 48 |
[key generation] one-time preparations needed for <worker>: |
| 49 |
x useradd service |
| 50 |
x su service |
| 51 |
x ssh-keygen -d |
| 52 |
|
| 53 |
[key distribution] to be executed on <remote>: |
| 54 |
x useradd joko_backup |
| 55 |
x su joko_backup |
| 56 |
x ssh service@<worker> "cat ~/.ssh/id_dsa.pub" >> ~/.ssh/authorized_keys |
| 57 |
the (") with the first (remote) command are important! |
| 58 |
otherwise your *local* shell would expand the tilde (~) |
| 59 |
|
| 60 |
[key distribution] to be executed on <worker>: |
| 61 |
This is an alternative to above if the account on <remote> already exists, |
| 62 |
and it is somehow required not to execute commands |
| 63 |
actively/manually at the <remote> side. Picture this: "the worker works". |
| 64 |
#> cat ~/.ssh/id_dsa.pub | ssh joko@netfrag.org "cat - >> ~/.ssh/authorized_keys" |
| 65 |
|
| 66 |
If the account at remote side doesn't exists, |
| 67 |
this shortcut might create it from the <worker> side as well: |
| 68 |
x ssh root@<remote> "useradd joko_backup" |
| 69 |
|
| 70 |
[login] test it on <worker>: |
| 71 |
x su service |
| 72 |
x ssh joko_backup@<remote-machine> |
| 73 |
|
| 74 |
------------------------------------------------------------------------------ |
| 75 |
|
| 76 |
|
| 77 |
------------------------------------------ |
| 78 |
annotiations |
| 79 |
------------------------------------------ |
| 80 |
- transfer files via ZMODEM-protocol and TeraTerm |
| 81 |
- on remote machine |
| 82 |
- sz <file1> <file2> <fileX> |
| 83 |
- in TeraTerm, do |
| 84 |
- File/Change Directory ... |
| 85 |
- File/Transfer/ZMODEM/Recieve |
| 86 |
|
| 87 |
|
Parent Directory
| 
Revision Log
