SSH Key Authentication: Difference between revisions

Revision as of 22:53, 27 August 2016

These instructions assist existing users of Cheaha in getting access to Big Green / Cheaha2.

ssh-keygen -t rsa

You can put a passphrase for your SSH key ( Not mandatory but highly recommended)
A id_rsa.pub file would have been created.
Open the file by running less ~/.ssh/id_rsa.pub and copy the content.
Press q to exit out of the file.
Now SSH to your cheaha.uabgrid.uab.edu account , and paste the content in ~/.ssh/authorized_keys using your favorite editor.
Now log out from cheaha.uabgrid.uab.edu
Run

ssh blazerid@cheaha.rc.uab.edu

ssh-keygen -t rsa

You can put a passphrase for your SSH key ( Not mandatory but highly recommended)
A id_rsa.pub file would have been created.
Open the file by running less ~/.ssh/id_rsa.pub and copy the content.
Press q to exit out of the file.
Now SSH to your cheaha.uabgrid.uab.edu account , and paste the content in ~/.ssh/authorized_keys using your favorite editor.
Now log out from cheaha.uabgrid.uab.edu
Run

ssh blazerid@cheaha.rc.uab.edu

In SSH Secure Shell, from the Edit menu, select Settings...
In the window that opens, select Global Settings, then User Authentication, and then Keys.
Under "Key pair management", click Generate New.... In the window that appears, click Next.
In the Key Generation window that appears:
- From the drop-down list next to "Key Type:", select from the following:
  - If you want to take less time to initially generate the key, select DSA.
  - If you want to take less time during each connection for the server to verify your key, select RSA.
- From the the drop-down list next to "Key Length:", select at least 1024. You may choose a greater key length, but the time it takes to generate the key, as well as the time it takes to authenticate using it, will go up.
Click Next. The key generation process will start. When it's complete, click Next again.
In the "File Name:" field, enter a name for the file where SSH Secure Shell will store your private key. Your public key will be stored in a file with the same name, plus a .pub extension.
- Important:
To complete the key generation process, click Next, and then Finish.
At the Settings screen, click OK.
Copy the content of .pub file generated.

@@ Line 47: / Line 47: @@
 ====SSH Secure Shell Client====
+* In SSH Secure Shell, from the Edit menu, select Settings...
+* In the window that opens, select Global Settings, then User Authentication, and then Keys.
+* Under "Key pair management", click Generate New.... In the window that appears, click Next.
+* In the Key Generation window that appears:
+** From the drop-down list next to "Key Type:", select from the following:
+***If you want to take less time to initially generate the key, select DSA.
+*** If you want to take less time during each connection for the server to verify your key, select RSA.
+** From the the drop-down list next to "Key Length:", select at least 1024. You may choose a greater key length, but the time it takes to generate the key, as well as the time it takes to authenticate using it, will go up.
+* Click Next. The key generation process will start. When it's complete, click Next again.
+* In the "File Name:" field, enter a name for the file where SSH Secure Shell will store your private key. Your public key will be stored in a file with the same name, plus a .pub extension.
+** '''Important:'''
+* To complete the key generation process, click Next, and then Finish.
+* At the Settings screen, click OK.
+* Copy the content of .pub file generated.