Tim is looking to install a DIY home alarm system. Leo says he can save money doing it himself, but the majority of the cost is home monitoring, which has a monthly fee. He can do that himself by monitoring via the Internet.
Leo uses Synology, which records to a hard drive and then can be accessed online, but it's not cheap. DropCam (now "Nest Cam") is another option. They're wireless and all he would need is power. But they use a lot of bandwidth.