Not quite on the cheap, but spread out enough that it hasn't been a financial issue!
I started out with cheapie SD cameras and NAS. ftp was fine. NAS just happened to be Sysnology, and someone pointed out their Surveillance Station software to me. 2 free licenses.... I stuck with 2 they give free as I was searching for cameras that looked better than what I had, on a budget...
I had already built a time server on a Raspberry PI, for use at location with no internet.... for the SD...
My Home Made Security System
I started out with cheapie SD cameras and NAS. ftp was fine. NAS just happened to be Sysnology, and someone pointed out their Surveillance Station software to me. 2 free licenses.... I stuck with 2 they give free as I was searching for cameras that looked better than what I had, on a budget...
I had already built a time server on a Raspberry PI, for use at location with no internet.... for the SD...
My Home Made Security System