DHCP (or Dynamic Host Configuration Protocol) is a common network protocol that’s running in your house right now. It’s responsible for handling devices that have been newly connected to your network and a**igning them an address, like being a**igned a hotel room when you check in. Having this a**igned to your devices means that all traffic on the network can find your device via your router, allowing your devices not only to talk to the internet through NAT, but also to other devices on the network.