Doesn't Comcast even require a special router, where they install custom certs and packet analysis software. Remember a friend of mine was on the phone long wit

Doesn't Comcast even require a special router, where they install custom certs and packet analysis software. Remember a friend of mine was on the phone long with their support, because he just wanted to use his own router, but Comcast wouldn't wanna patch him through. Anyone had similar experience? I can ask him again for details.