Wireless Home security DVR (not wireless cameras)

Im looking to install surveillance cameras around my home. nothing over the top, just a 4 camera set up. i dont have a problem running the wired connections to the cameras set up. what i am having a hard time finding is a dvr unit that will wirelessly hook up to my home internet as opposed to hard wire. where my modem is installed isnt a place i can easily run the dvr unit to. anyone have some recommendations or remedies for what im facing? thanks for the help.