Final answer:
To capture the NTLM hash for the user Jason on a Windows 11 machine using Responder on Ubuntu, you would use the -I flag with the Responder command to specify the network interface.
Step-by-step explanation:
The question pertains to running the Responder tool on an Ubuntu machine to find the NTLM hash for the Windows 11 user named Jason, simulating a login attempt with preset credentials (username: jason, password: qwerty). To specify the network interface while running Responder, you would use the -I flag followed by the interface name, such as eth0.
An example command might look like sudo responder -I eth0 -w, where the -w flag tells Responder to run in responder-only mode. It is imperative to ensure that this kind of activity is conducted within a controlled environment, typically a penetration testing lab, and with proper authorization, as capturing NTLM hashes otherwise would be illegal and unethical.