At a fundamental level, an IP address is a number representing a device on a network. Expanding upon that, IP is a suite of protocols that facilitate communication between network devices through a process called routing. In IPv4, there are both private and public addresses. Public addresses are routable on the Internet, and potentially accessible from any part of the Internet. Firewalls will often protect the devices behind public addresses to ensure that only trusted traffic is allowed through. Private addresses are only routable on local area networks (LANs) and can’t directly reach public addresses without the use of network address translation (NAT).
Articles in this section
- About your static IP address
- Do IPv6 and IPv4 addresses look different?
- How to create a strong password?
- How do I check my ONT (Optical Network Terminal) for connectivity?
- How does fiber Internet work?
- How is fiber Internet installed?
- Order and set up your static IP address
- Troubleshooting Internet issues
- What is a VPN?
- What is DNS? What is reverse DNS?