has used SSH port forwarding capabilities on public-facing systems and configured at least one instance of  to use a network pipe over SMB during the 2020 SolarWinds intrusion.(Citation: Symantec RAINDROP January 2021)
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: has used SSH port forwarding capabilities on public-facing systems and configured at least one instance of  to use a network pipe over SMB during the 2020 SolarWinds intrusion.(Citation: Symantec RAINDROP January 2021) ### Response: T1090.001.