Refer to the exhibit. A network engineer is reconfiguring clientless SSLVPN during a maintenance window, and after testing the new configuration, is unable to establish the connection. What must be…

Enabling client services on the outside interface activates AnyConnect full-tunnel SSL client access, not browser-based clientless VPN sessions.

On a Cisco ASA, the group policy governs which VPN tunnel protocols are permitted for users in that group; if 'ssl-clientless' is absent from the 'vpn-tunnel-protocol' list, users are denied browser-based clientless access regardless of the interface-level SSLVPN configuration. Enabling the clientless protocol under the group policy directly resolves the connection failure.

DTLS is a UDP-based transport optimization used exclusively by AnyConnect full-tunnel clients and has no role in establishing a clientless SSL VPN session.

Auto sign-on configures single sign-on access to internal web applications after a clientless session is already active and does not affect the initial VPN connection establishment.