Purpose

This article explains how to connect GNS3 installed on Windows to a remote GNS3 server.This is useful when the remote server has more CPU and RAM.
Connecting to a remote server helps when your local computer does not have enough CPU or RAM to run large lab topologies. In this setup, the remote server handles all device processing, which improves performance, stability, and allows you to run bigger labs smoothly without overloading your PC.

Step 1: Open GNS3

Open GNS3 on your Windows PC.

Step 1: Go to Preferences

Click:

Edit → Preferences

Step 3: Add Remote server 

Go to:

Server → Remote Servers

Click Add

Name: REMOTE-SERVER

Protocol: HTTP
Host: 192.168.18.199

Port: 80
User: gns3
password: gns3

Click OK

Step 4: Select Remote Server

Go to:

Server → Main Server

Select:

Choose your added server.

Click Apply → OK

Step 5: Verify Connection

Status shows Connected