本套課程系統涵蓋了從GNS3套件的下載；GNS3-GUI和VM的安裝、設置和部署；Dynamips，IOU，QEMU設備的安裝方法；SecureCRT，Solar-putty等遠程訪問工具的使用；到GNS3的實戰項目演示。

GNS3是我們在學習、備戰CCNA，CCNP路上的好幫手，使用GNS3可以幫助我們快速的搭建出需要的實驗環境，然後進行配置和驗證。GNS3當中集成了多種模擬環境，可以添加Dynamips，IOU，QEMU和Docker實例，這極大的擴展了我們的實驗範圍。GNS3可以運行Cisco的IOS路由器，交換機，還可以運行Cisco的IOSv，IOS-XRv，IOS-XEv，NS-OSv，Cisco ASAv 系列安全設備，除了Cisco的設備以外，GNS3還能運行JuniperOS，Fortinet，huawei等廠商的設備。

相信通過本課程的學習，大家一定可以熟練掌握GNS3的使用方法，助大家在學習備考CCNA，CCNP的路上一臂之力！

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This course system covers from the download of GNS3 suite; GNS3-GUI and VM installation, setup and deployment; Dynamips, IOU, QEMU device installation methods; SecureCRT, Solar-putty and other remote access tools to the use of GNS3 real-world project demonstration.

GNS3 is a good helper for us to learn and prepare for CCNA and CCNP, using GNS3 can help us to quickly build the required experimental environment, and then configure and validate it.GNS3 integrates a variety of simulation environments, and you can add Dynamips, IOUs, QEMUs, and Docker instances, which greatly expands the scope of our experiments. GNS3 can run Cisco's IOS routers and switches, as well as Cisco's IOSv, IOS-XRv, IOS-XEv, NS-OSv, and Cisco ASAv series of security appliances. In addition to Cisco's appliances, GNS3 can also run JuniperOS, Fortinet, and Huawei's GNS3 can also run JuniperOS, Fortinet, huawei and other devices.

I believe that through the learning of this course, you will be able to familiarize yourself with the use of GNS3, to help you learn to prepare for the CCNA, CCNP on the road to help!