Cisco Cisco Email Security Appliance C170 Guia Do Utilizador
Chapter 5 Email Authentication
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Cisco IronPort AsyncOS 7.5 for Email Advanced Configuration Guide
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Larger key sizes are more secure; however, larger keys can have an impact on
performance. IronPort recommends a key size of 768 bits, which should
provide a good balance between security and performance.
performance. IronPort recommends a key size of 768 bits, which should
provide a good balance between security and performance.
Step 4
Click Submit. The key is generated.
Step 5
Click the Commit Changes button, add an optional comment if necessary, and
then click Commit Changes to finish adding the new signing key.
then click Commit Changes to finish adding the new signing key.
Note
If you have not done so already, you may need to edit your domain profile to
assign the key.
assign the key.
Exporting Signing Keys
When you export signing keys, all of the keys currently existing on your Cisco
IronPort appliance are exported together in a single text file. To export signing
keys:
IronPort appliance are exported together in a single text file. To export signing
keys:
Step 1
Click Export Keys on the Signing Keys page. The Export Signing Keys page is
displayed:
displayed:
Figure 5-9
Export Signing Keys Page
Step 2
Enter a name for the file and click Submit.
Importing or Entering Existing Signing Keys
To enter an existing key:
Step 1
Click Add Key on the Mail Policies > Signing Keys page. The Add Key page is
displayed.
displayed.
Step 2
Paste the key into the Paste Key field (must be PEM-formatted and must be RSA
keys only).
keys only).