The module, now part of the Cisco Secure Client , allows Windows users to establish a secure VPN connection before signing into their local machine. This is essential for remote workers who need to authenticate against a corporate domain controller or map network drives during the Windows sign-in process. How to Download the SBL Module
The SBL module is generally not a standalone download for end-users; it is a component of the larger Cisco AnyConnect (Secure Client) deployment package. Chapter: Configure AnyConnect VPN - Cisco Secure Client cisco anyconnect start before logon module download