Cisco Cisco Email Security Appliance C650 Guía Del Usuario
20-16
User Guide for AsyncOS 10.0 for Cisco Email Security Appliances
Chapter 20 S/MIME Security Services
Verifying, Decrypting, or Decrypting and Verifying Incoming Messages using S/MIME
How to Verify, Decrypt, or Decrypt and Verify Incoming Messages Using
S/MIME
S/MIME
Note
If you want to perform S/MIME verification, decryption, or decryption and verification using CLI, use
the
the
listenerconfig
>
hostaccess
command. See the CLI inline help for more details.
Setting Up Certificates for Decrypting Messages
You must add your organization’s S/MIME certificate (that contains the private key required to perform
decryption) to the appliance.
decryption) to the appliance.
Steps
Do This
More Info
Step 1
Understand the S/MIME certificate
requirements.
requirements.
See
Step 2
Depending on your requirements, do one of the
following:
following:
•
For S/MIME decryption, add your
organization’s S/MIME certificate (that
contains the private key required to
perform decryption) to the appliance.
organization’s S/MIME certificate (that
contains the private key required to
perform decryption) to the appliance.
•
For S/MIME verification, add the public
key of the sender's S/MIME certificate
required to perform verification to the
appliance.
key of the sender's S/MIME certificate
required to perform verification to the
appliance.
•
For S/MIME decryption and verification,
add the following to the appliance:
add the following to the appliance:
–
Your organization’s S/MIME
certificate (that contains the private
key required to perform decryption) to
the appliance.
certificate (that contains the private
key required to perform decryption) to
the appliance.
–
Public key of the sender's S/MIME
certificate required to perform
verification.
certificate required to perform
verification.
See
•
•
Step 3
Configure your mail flow policies to verify,
decrypt, or decrypt and verify incoming
messages using S/MIME.
decrypt, or decrypt and verify incoming
messages using S/MIME.
See
.
Step 4
(Optional) Define the action that the Email
Security appliance takes on decrypted or
verified messages.
Security appliance takes on decrypted or
verified messages.
See