Cisco Cisco Email Security Appliance C170 Guia Do Utilizador
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Cisco AsyncOS 8.5.5 for Email Security User Guide
Chapter 22 Encrypting Communication with Other MTAs
Managing Lists of Certificate Authorities
Step 2
Click Edit Settings in the Certificate Authorities section.
Step 3
Click View System Certificate Authorities.
Disabling the System Certificate Authority List
The pre-installed system certificate authorities list cannot be removed from the appliance, but you can
enable or disable it. You might want to disable it to allow the appliance to only use your custom list to
verify certificates from remote hosts.
enable or disable it. You might want to disable it to allow the appliance to only use your custom list to
verify certificates from remote hosts.
Procedure
Step 1
Navigate to the Network > Certificates page.
Step 2
Click Edit Settings in the Certificate Authorities section.
Step 3
Click Disable for the System List.
Step 4
Submit and commit your changes.
Importing a Custom Certificate Authority List
You can create a custom of list trusted certificate authorities and import it onto the appliance. The file
must be in the PEM format and include certificates for the certificate authorities that you want the
appliance to trust.
must be in the PEM format and include certificates for the certificate authorities that you want the
appliance to trust.
Procedure
Step 1
Navigate to the Network > Certificates page.
Step 2
Click Edit Settings in the Certificate Authorities section.
Step 3
Click Enable for the Custom List.
Step 4
Enter the full path to the custom list on a local or network machine.
Step 5
Submit and commit your changes.
Exporting a Certificate Authorities List
If you want to use only a subset of the trusted certificate authorities in the system or edit an existing
custom list, you can export the list to a .txt file and edit it to add or remove certificate authorities. After
you have finished editing the list, import the file back onto the appliance as a custom list.
custom list, you can export the list to a .txt file and edit it to add or remove certificate authorities. After
you have finished editing the list, import the file back onto the appliance as a custom list.
Procedure
Step 1
Navigate to the Network > Certificates page.