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## Setting up a Symmetric key 

To set up a Symmetric key, complete these steps: 

1. Open the Customize Console Date/Time window. This is the same operation that is described in step 1 on page 167. 

2. Select Manage Symmetric keys from the Select Action  list in Details for Network Time Protocol (NTP), as shown in Figure 8-11. 

<img src='content_image/973097.jpg'>

3. The Manage Symmetric Keys window opens (Figure 8-12). Click Select Action →  Add Key . 

<img src='content_image/973096.jpg'>

4. The Add Symmetric Key Data  window opens (Figure 8-13). The following data must be entered: 

Key index A numeric value in the range 1 - 65534. 

Key string The key string can be up to 40 characters long. If the string is 40 characters long, the characters must be hexadecimal ASCII characters 

