Open the [Cisco AnyConnect Secure Mobility Client]. The AnyConnect client is typically located in a folder inside the Applications section called ‘Cisco’.
Type kekvpn.kek.jp/uap and click [Connect].
Enter your username and password. (The username and password are the same as what you were using before the system migration.)
Then click [OK].
If the authentication is successful, the VPN connection will be initiated and an icon with a key mark will appear on the taskbar.