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SSH Putty Setup

MANUAL SECTIONS

How To Create an RSA Key with Secure CRT:

1. Launch the Secure CRT application.  The application displays  typically with the Connect dialog box open to the Session List tab. If the connect dialog box isn't open, click on the connect button  (3rd from the left)

2. Select the New button (3rd from left) to create a new  session.  The Session Preferences – new dialog box displays.

3. In the Name field, enter name of the session you are  creating.

 4. In the Protocol field, select ssh from the drop-down  list. As soon as you do this, additional boxes will appear below that section.

5. In the Hostname or IP field, enter your domain name or  the IP number for your domain. For example: yourdomain.com

6. Complete the rest of the fields on this screen with the appropriate  information. The Port number should be left at 22.  Make sure to enter your domain user name in the Username field.  Leave Cipher as 3DES and select RSA from the Authentication field's  drop-down list.

7. Select the Advanced button.  The Advanced SSH Options dialog box displays. Make sure the "Use Global" radio button  is checked.

8. On the General tab, select the Create Identity File button from the Identity Filename section of the dialog box.  The SecureCRT – RSA Key Generation Wizard displays.

9. Click on the Next> button to proceed with the next  step of the Wizard.

 10.        If you wish to use  a passphrase as an added layer of security, enter the passphrase in the Passphrase and Confirm Passphrase fields.  Be sure to enter  it into both fields in exactly the same way .  Don't forget to your passphrase  handy.  You will need it when establishing a connection to the server.

 11.        In the Comment field, either accept the default value or enter a new one.  The  comment  will be your way of knowing when the application is prompting you for your  passphrase.

12.        Click on the Next> button to proceed to the next step.  (Note:  the <Back button  can be used throughout this wizard to move back to the previous step and  make changes if necessary.)

 13.        You need to determine  the length of your RSA key pair needs to be determined.  It is recommended  that you choose a value between 1024 and 2048 bits.  2048  bits is the maximum and will generate the most secure key, but it takes  longer to generate a  key of this size.  512 bits is the absolute minimum  and is not recommended.  Once you have entered a number, select Next> to proceed.

 

 14.        As the instructions  in the wizard indicate, you need to move your mouse around  on the screen  for the application to generate the key.  The application uses a complex  set of formulas to create the key out of a mathematical interpretation  of your mouse's  movements.  When you have moved your mouse around sufficiently,  the screen automatically changes and the key pair is generated.  This is  shown in the image below.   You do not need to move your mouse around for  this second part of the step.

15.        When both progress  bars are "full", the Next> button becomes enabled.  Select it  to proceed.

 

 16.        Select the folder  on your hard drive in which to store the key.  You can accept the default,  which is usually the identity sub-folder of the SecureCRT folder, located wherever you installed the application originally.

17.        To complete the wizard,  select the Finish button.  The Advanced SSH Options dialog  box reappears.

18.        From there, select  the OK button to close the dialog box.  The Session Preferences  – new dialog box reappears.

19.        Select OK to apply the changes and end the procedure.  Your newly created session  will now appear at the bottom of the Session List.

Warning:

At this point you cannot yet connect to the server using  Secure CRT.  First, you must  place the RSA key on the server using the  SSH Manager in the Control Panel.  This is explained in the next section

How To Place the RSA Key on the Server:

1. (If you left the SSH Manager open from earlier sections in this  manual, you may skip  this step.)  From the Control Panel, select the SSH icon.  Once again, the SSH Manager displays

.

    Place your key in the text box that is provided in the SSH  Manager and submit it.  (To  do this, you must open the key in another application,  copy it, and then paste it into this text box.)

2. Launch any text-editor.  On a Windows-based PC, Notepad will suffice.  (This is available from the Start menu, under Programs,  then Accessories.)

3. From the Notepad File menu, select Open.  The Open dialog box displays.

4. Find the key file by switching the Files of type field  to All Files (*.*) .  Then, move  through the directory structure  to the location of your file, identity.pub.  (The application  stated  where the file would be stored in the previous procedure.)  When you located  the  file, double-click on it to open it in Notepad.  (Note, the image below  has been altered, so the key will not actually work.)

5. Once the key is displayed in Notepad, highlight the entire key  with your mouse.  From the Edit menu, select Copy .

6. Switch back to the SSH Manager and paste the key into  the text box.  You can do this by placing the cursor in the dialog box  and either selecting Edit and then Paste from your browser's  main menu or by using the key combination [Ctrl] + [V] .  (Note:   the image below has been altered.  It is not a real key.)

7. Select the Submit button.  A new screen displays.

 8. Enter the IP address for any computers from which you will be  accessing the server.  You can get this information from your ISP (Internet  Service Provider). 

 Or, if you are currently at the computer you will be regularly  using, you can find the IP address by:

  • Open a MS-DOS PROMPT (For windows user, start, run and ms-dos prompt)
  • Type IPCONFIG and press ENTER
  • Write the IP ADDRESS down.
  • In line #1 of step 5 above enter the IP address using the first three  sets of numbers, then * for the last set of numbers. Example: If your  IP address is 123.58.199.122 then you will  enter 123.58.199.* in the box.
  • If you have a dedicated IP address (usually a cable modem or DSL or something  like that) then do not use the *.
  • 9. After you have entered a number in at least one of the spaces  provided, click on the Next button.  A new screen displays.
  • 10.        Make sure that the  IP address listed is correct.  Then select the Submit button.  A  message appears indicating that you will be able to access the server,  via your SSH software (Secure CRT), from one of the addresses you listed  within the next  ten minutes.
  • Once these steps have been performed, use the Secure CRT software as  usual to establish a connection to your site on the server.  You will be  prompted for your  passphrase when the connection is made.  Once the connection  is made, Secure CRT works similarly to other telnet utilities.

Related Links: Secure CRT | Putty

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