[Multi-hop Proxy](https://attack.mitre.org/techniques/T1090/003), and [Port Knocking](https://attack.mitre.org/techniques/T1205/001).
Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request. ### Instruction: List the MITRE techniques contained in the text. ### Input: [Multi-hop Proxy](https://attack.mitre.org/techniques/T1090/003), and [Port Knocking](https://attack.mitre.org/techniques/T1205/001). ### Response: T1601.001.