The security appliance offers the option to purchase a DES or 3DES-AES license to enable specific features that provide encryption technology, such as secure remote management (SSH, ASDM, and so on), site-to-site VPN, and remote access VPN. Enabling the license requires an encryption license key.
If you ordered your security appliance with a DES or 3DES-AES license, the encryption license key comes with the security appliance.
If you did not order your security appliance with a DES or 3DES-AES license and would like to purchase one now, the encryption licenses are available at no charge on Cisco.com.
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