bobp

Hello to everyone this is my first post: A company set up a series of security cameras (cctv) and were monitoring them remotely from my house. I no longer want them to have access, how do I block them from entering my router remotely -then the dvr to view my cameras. They initially choose all the settings -the host name-ports-etc. I know how to get to my router settings -my camera IP addresses and ports etc. What do i need to change? Do I just hit the reset button on the wireles router and start over or do i need to hit the reset button on the dvr? I have a AverEH1000h-4Nano dvr and vivotek fds8134v cameras. Thanks for any input. Bobp