IPS = Intrusion Prevention System
IDS = Intrusion Detection System
What is it you are looking for? IPS/IDS is not practical for the small home network. Some question their value on large networks. HIPS (for Host Intrusion Prevention Systems) are available for PCs, see Comodo Firewall.
im setting up an office network. 6 pc, 2 notebooks, 3 printers. Im smack in 'da middle of USC and UCLA. Bad things flow out of those internet signals. So I wanna set it up to alert if an unauthorized person is exploring.
all will be networked at the building except 1 notebook which the owner will have on his person.