Cisco Cisco Email Security Appliance C170 사용자 가이드

To see the trusted certificate authorities included in the system list, click View System Certificate 
Authorities on the Edit Certificate Authorities page.

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. To import a list via the GUI, click Enable for the Custom List and enter the full path 
to the custom list on a local or network machine. Submit and commit your changes.

The pre-installed system certificate authorities list cannot be removed from the appliance, but it can be 
disabled to allow the appliance to only use your custom list to verify certificates from remote hosts. To 
disable this list via the GUI, click Disable for the System List on the Edit Certificate Authorities page. 
Submit and commit your changes.

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.

 shows the Export Certificate Authority List page in the GUI where you can export the 

system and custom lists.

To export a list via the GUI, click Export List on the Edit Certificate Authorities page. AsyncOS 
displays the Export Certificate Authority List page. Select the list you want to export and enter a 
filename for the list. Click Export. AsyncOS displays a dialog box asking if want to open or save the 
list as a .txt file.