Just as the name suggests, a manual connection is one where you must configure all of your VPN properties by hand.
Further, both ends of the connection require you to configure several elements that must match exactly. For example, your inbound keys must match the remote system's outbound keys or the connection will fail.
Manual connections use static keys that are not refreshed or changed while the connection is active. You must stop a manual connection in order to change its associated key. If you consider this a security risk, and both ends of the connection support the Internet Key Exchange (IKE) protocol, you may want to consider setting up a dynamic connection instead.
To define the properties for your manual connection, follow these steps: