If you are running an OpenVPN server and you need special settings for one or  more clients, then the Client Specific Overrides tab is the place to configure such settings. To begin, click on Client Specific Overrides and click on the Add button below the table.

In the General Information section, you must specify both the server to which the override applies and the name of the client. In the Server List listbox, select a server for which the override will apply. Not selecting any servers will result in the override being applied to all servers. The Disable check box, if checked, will disable the override without removing it from the list. In the Common name edit box, you must enter the client's X.509 common name. In an X.509 certificate, the common name, or CN, is the field that must match the host being authenticated, and is typically used to identify a given user. You can enter a non-parsed description in the Description edit box. The Connection blocking check box will, if checked, block this client connection based on its common name.

In the next two sections, Tunnel Settings and Client Settings, most of the settings are similar to settings that are available on the server configuration page. The difference is, of course, that setting them here will cause them to be applied to the override only. For example, in Tunnel Network, you can define a virtual network to be used only by this client. In the Client Settings section, you can make changes such as providing a different DNS server list to this client. The Server Definitions checkbox, if checked, will prevent this particular client from receiving any server-defined client settings. Click on the Save button when you are done configuring the client-specific overrides for the client.