Xfinity Forum Archive...
This is an archived section of the community.
Content in this area has been identified as outdated or irrelevant.
This change was done in an effort to make the forum easier to use and to keep only the most helpful and recent content active.
Post your questions in the Xfinity Community
If you have an eligible Comast gateway:
Then visit xfinity.com/myxFi.
There are various other ways to do this if you have a standalone router - essentially you'll have to determine what device(s) they are using and blacklist them from the router. Some devices have software that makes this easy, some not so much.