Documentation

In order to change the cipher in OpenVPN Access Server you will need to add the following line to both the client and server config directives via the Advanced VPN page:

cipher ciphername

If we wanted to enable the AES-256 cipher we would add the following line:

cipher AES-256-CBC

Here is a list of different ciphers that can be used with OpenVPN Access Server:


DES-CBC
RC2-CBC
DES-EDE-CBC
DES-EDE3-CBC
DESX-CBC
BF-CBC
RC2-40-CBC
CAST5-CBC
RC2-64-CBC
AES-128-CBC
AES-192-CBC
AES-256-CBC

Although this is not recommended, certain special configurations might not require encryption when using OpenVPN-AS. To completely disable encryption you can add the following lines in the Client and Server Config Directives on the Advanced VPN Page:

auth none
cipher none

Note: "auth none" disables packet authentication and "cipher none" disables encryption.