# Definitions

### Subnet Mask

[![image.png](https://bsa.lynops.com/uploads/images/gallery/2024-03/scaled-1680-/wIAimage.png)](https://bsa.lynops.com/uploads/images/gallery/2024-03/wIAimage.png)

The subnet mask indicated which parts of the IP address belong to the network and which parts belong to the host.

### Class C IP

Class C IP address are given to small organizations that do not have a lot of hosts:

[![image.png](https://bsa.lynops.com/uploads/images/gallery/2024-03/scaled-1680-/Vc8image.png)](https://bsa.lynops.com/uploads/images/gallery/2024-03/Vc8image.png)

### DHCP

Make a reservation on the DHCP to get a static IP address. Routers have the DHCP service built in to them.

[![image.png](https://bsa.lynops.com/uploads/images/gallery/2024-03/scaled-1680-/6b5image.png)](https://bsa.lynops.com/uploads/images/gallery/2024-03/6b5image.png)

### NAT

NAT translates the private Ip to the Public IP

[![image.png](https://bsa.lynops.com/uploads/images/gallery/2024-03/scaled-1680-/8SYimage.png)](https://bsa.lynops.com/uploads/images/gallery/2024-03/8SYimage.png)

[![image.png](https://bsa.lynops.com/uploads/images/gallery/2024-03/scaled-1680-/YUIimage.png)](https://bsa.lynops.com/uploads/images/gallery/2024-03/YUIimage.png)