Authorized SSH Keys
I try to configure authentication using SSH on my ID I authorized keys generated my pair of keys using Puttygen.
When I go in configure my key allowed, I can't determine what my Public Exponent is supposed to be. Anyone can shed some light?
Thank you
Mike J.
PuTTY has been my favorite client SSH for nearly four years.
I am currently using a recent version of PuTTY (2 July 2004), and the following instructions have been written for this new version. However, build everything from a snapshot taken in recent years should work.
The main problem in establishing authorized SSH keys is that only the oldest RSA1 key format is acceptable. This means that you must indicate your key generator to create a RSA1 key, and you need to restrict the SSH client using the SSH1 protocol.
Here is how you do it with recent versions of PuTTY:
(1) launch puttygen
(2) in the group 'Settings' at the bottom of the dialog box, click the type of key SSH1. Also, I would recommend to set the number of bits in the key generated to 2048.
3) click on Generate... Follow the instructions. The key information appears in the upper pane of the dialog box.
(4) clear on the 'key' comment editing area
(5) to select all the text in the pane labeled "Public key for pasting into authorized_keys file" and press Ctrl-C.
(6) areas of edition of type a password in the "Key passphrase" and "Confirm passphrase".
7) click "save private key".
(8) save the PuTTY private key file to a directory that is private to your Windows login (in the "Documents and Settings / (userid) /My Documents" subtree under Win2K/XP).
(9) launch PuTTY
(10) create a new PuTTY session as follows:
Session:
IP address: IP address of the sensor IDS
Protocol: SSH
Port: 22
Connection:
Auto-login username: cisco (or whatever connection you use on the sensor)
Connection/SSH:
Preferred SSH version: 1 only
Connection/SSH/Auth:
Private key for authentication file: Navigate to the. PPK file saved in step 8 above.
Session: (back to top)
Saved sessions: (enter the sensor name, click Save)
11) click Open
Use password authentication to connect to the sensor CLI, since we do not yet have the public key on the sensor.
(12) type the following command in CLI and press ENTER:
Configure the terminal
(13) the following command in the CLI, but do not press ENTER again (make and type a space at the end):
SSH authorized key mykey
(14) right click of the mouse in the PuTTY terminal window... causing material Clipboard copied in step 5 to be entered in the CLI
(15) press on enter
(16) type the following command in CLI and press ENTER:
output
(17) confirm that the authorized key has been entered correctly. The following CLI command and press ENTER:
view authorized ssh keys mykey
(18) leave the CLI IDS. The following CLI command and press ENTER:
output
=====
In my next post, I will finish these instructions...
Tags: Cisco Security
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SQLite > .q
$
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