Hello and thank you for your question. I look forward to assisting you today. Just to be clear, you are trying to lock down your network through your Linksys router, correct?
Okay. First I want to make sure you know how we work. We are not affiliated with your cable company or Linksys, so I may need to ask a few questions along the way. Did you install the router yourself, and if so, what is the model number?
Very well. You can come back anytime and we will try to assist you. Good luck!