The default Redirection mode for SonicWall Secure Mobile Access (SMA) is Split Tunnel. In this mode, the network traffic generated by the user's device is divided between the local network and the tunnel to the remote network. This means that while some traffic is directed through the VPN tunnel for secure access to corporate resources, other traffic can bypass the tunnel and go directly to the internet. Using Split Tunnel is beneficial as it helps reduce bandwidth usage on corporate networks and enhances the speed for users by allowing them to access local resources and the internet simultaneously without routing all traffic through the VPN connection. This configuration is particularly useful for maintaining performance while ensuring that sensitive enterprise data is still securely transmitted through the tunnel. In contrast, the other redirection modes imply varying levels of tunneling that either route all traffic or combine local precedence with tunnel traffic, which are not set as the default settings.