---
description: >-
  Before diving into IPFighter, we suggest getting familiar with the key terms
  below to use IPFighter like a pro.
---

# IPFighter Terminology

### ⭐ Port number

You will often encounter the concept of ports when using IPFighter. For example, with the IP port forward set to `127.0.0.1:1008`, `1008` is the port number.

Port numbers can be defined as specific identifiers that correspond to individual applications or services running on a device within a network.

You can think of a public IP address as a large apartment building (like a condominium) that everyone can see and access. Each apartment in that building is like a specific port number.

Just as each apartment has its own number to identify it within the building, each port number identifies a specific application or service on that public IP. This way, when someone sends data to the building's address (public IP), the building (router) knows which apartment (port) to direct that data to, ensuring it reaches the right application!

So, only apps or browsers configured with the IP port forward `127.0.0.1:1008` can connect through the public IP of the proxy forwarded to this port.

### ⭐ Port forwarding

Port forwarding is the process of directing data from a specific port on a public IP address to a private IP address within a LAN. This process is set up through a router, allowing devices on the LAN to receive connections from the outside.

When you forward a proxy to a specific port, it means you are creating a link between the proxy's IP and the port on a device within the LAN, allowing traffic to the proxy to be forwarded to the correct address in the LAN.

To use IPFighter, you need to forward your proxy to the format `localhost:port`. Only apps or browsers configured with this `localhost:port` can connect to that proxy.

### ⭐ Bandwidth

Bandwidth is the maximum speed at which a website can transmit data in one second. In other words, it refers to the capacity of the network link to transfer data between the website and the user, measured over a specific period.

Unlimited bandwidth proxy refers to proxies that do not have bandwidth limits. You can access websites simultaneously, watch videos, or play games while maintaining fast access speeds.

This type of proxy is often billed based on GB usage. The more you use it for bandwidth-intensive activities, the more you will pay. Consequently, you may end up spending more on the proxy provider. This pricing model is becoming increasingly popular, partly because it meets user demand and partly because it allows sellers to earn higher profits.

### ⭐ Pay-per-gb proxy

This is a type of proxy charged based on traffic volume in GB. This proxy is usually a rotating residential proxy with high trust and loading speed, making it a preferred choice for many. It typically isn’t charged by time, only by usage volume, so the more you use, the more it costs.

### ⭐ Primary proxy

Primary proxy refers to the proxies that you forward to a new port and add to an application or browser profile for use. This setup allows you to manage and utilize the proxies effectively for various tasks.

### ⭐ Secondary proxy

You can assign an additional proxy, known as a secondary proxy, to accompany the primary proxy. This setup can enhance your network management and provide extra layers of security or redundancy.

The secondary proxy serves as a backup. If there’s a rule that prevents the use of the primary proxy, it will immediately switch to the secondary proxy. This ensures continuous connectivity and reliability in your network.

### ⭐ Non-proxy list

When you add domains to the no-proxy list, these domains will be automatically bypassed and will not load through the proxy; instead, they will use the local IP address of your device.

Typically, these domains are hidden domains that are not important, do not have tracking from the website, and do not affect your work, but they often consume a lot of bandwidth. You can also customize these lists to suit your needs.

### ⭐ IPv6 Proxy

When you purchase a service from an ISP, a typical package for individuals or households provides one IPv4 and one IPv6 address, both dynamic. Using the original IPv6 from the ISP, IPFighter generates IPv6 addresses for the LAN. By retaining the first 16 characters and randomizing the last 6, IPFighter allows you to create unlimited unique IPv6 addresses.

### ⭐ DNS Server

DNS, short for Domain Name System, is the system that resolves domain names on the Internet. A DNS Server functions like a phone book, converting the domain name of your website into a specific IP address, and linking network devices together so users can access content online.

A DNS leak occurs when your DNS queries are sent outside of a secure connection, exposing your browsing activities to your Internet Service Provider (ISP) or other entities. This can happen when using a VPN or proxy, where the expected protection is compromised, allowing your real IP address and visited websites to be visible.

IPFighter supports changing the DNS server to Google, Cloudflare, or custom DNS settings to prevent DNS IP leaks, which can raise suspicions for websites. This ensures that your DNS queries remain private and secure, helping to maintain your anonymity online.

### ⭐ LAN (Local Area Network)

A Local Area Network (LAN) is a network that connects computers and devices within a limited geographical area, like a home, office, or campus. LANs enable devices to share resources, such as files and printers, and facilitate communication among users. They typically use wired connections (like Ethernet) or wireless technology (like Wi-Fi).

Devices on the same LAN can share a proxy through IPFighter. You only need to manage it from one computer, and all your other devices will use the IPFighter to save bandwidth and increase network speed.
