Scenario: External users are experiencing issues connecting to Intranet applications through NetScaler. Clientless Access is disabled. Which action should a Citrix Administrator take to investigate…

dmesg.boot contains kernel boot messages from the NetScaler appliance itself and does not provide information about user VPN connection attempts or plug-in errors.

The NetScaler Plug-in (also known as the Citrix Gateway Plug-in) generates detailed client-side logs that record the ICA/VPN tunnel negotiation, authentication steps, and any errors encountered during connection establishment. Since Clientless Access is disabled, users must rely on the full VPN plug-in, and its logs directly capture what is failing during the connection attempt. This is the most targeted source of diagnostic information for plug-in-based connectivity issues.

Configuring ACL and TCP logging captures network-level packet filtering events and is used for firewall rule troubleshooting, not for diagnosing VPN plug-in session failures.

NetScaler Auditing logs administrator configuration changes and user authentication events at a high level, but does not provide the granular plug-in negotiation details needed to diagnose client connection failures.